Detectors

Nuclear Dynamics Pty Ltd supplies Ludlum radiation detectors in South Africa.
Radiation detectors for monitoring, contamination checks, sample counting and measurement applications.

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Alpha-Beta-Gamma

Ludlum Model 44-25

Ludlum Model 44-25

  • Detector Type
    • 2 Pancake GMs Hand Monitor Detector
  • Active Window Area
    • 31 cm2 (4.8 in2)
  • Sensitivity (Cs-137)
    • 6600 cpm per mR/hr (137Cs)
More Info
Ludlum Model 44-26

Ludlum Model 44-26

  • Detector Type
    • 3 Pancake GMs Foot Monitor Detector
  • Active Window Area
    • 46 cm2 (7.1 in2)
  • Sensitivity (Cs-137)
    • 9900 cpm per mR/hr (137Cs)
More Info
Ludlum Model 44-40 Series

Ludlum Model 44-40 Series

  • Detector Type
    • Pancake GM With Lead Shielding
  • Active Window Area
    • 15.5 cm2 (2.4 in2)
  • Sensitivity (Cs-137)
    • 3300 cpm per mR/hr (137Cs)
More Info
Ludlum Model 44-7

Ludlum Model 44-7

  • Detector Type
    • End Window GM
  • Active Window Area
    • 6 cm2 (0.93 in2)
  • Sensitivity (Cs-137)
    • 2100 cpm per mR/hr (137Cs)
More Info
Ludlum Model 44-88

Ludlum Model 44-88

  • Detector Type
    • Pancake GM
  • Active Window Area
    • 15 cm2 (2.3 in2)
  • Sensitivity (Cs-137)
    • 3300 cpm per mR/hr (137Cs)
More Info
Ludlum Model 44-89

Ludlum Model 44-89

  • Detector Type
    • 4 Pancake GMs
  • Active Window Area
    • 62 cm2 (9.6 in2)
  • Sensitivity (Cs-137)
    • 13,200 cpm per mR/hr (137Cs)
More Info
Ludlum Model 44-9

Ludlum Model 44-9

  • Detector Type
    • Pancake GM
  • Active Window Area
    • 15.5 cm2 (2.4 in2)
  • Sensitivity (Cs-137)
    • 3300 cpm per mR/hr (137Cs)
More Info
Ludlum Model 44-9-18

Ludlum Model 44-9-18

  • Detector Type
    • Pancake GM
  • Active Window Area
    • 15.5 cm2 (2.4 in2)
  • Sensitivity (Cs-137)
    • 3300 cpm per mR/hr (137Cs)
More Info
Ludlum Model 44-9DOSE

Ludlum Model 44-9DOSE

  • Detector Type
    • Pancake GM
  • Active Window Area
    • 15.5 cm2 (2.4 in2)
  • Sensitivity (Cs-137)
    • 3300 cpm per mR/hr (137Cs)
More Info
Ludlum Model 44-94

Ludlum Model 44-94

  • Detector Type
    • 4 Pancake GMs
  • Active Window Area
    • 62 cm2 (9.6 in2)
  • Sensitivity (Cs-137)
    • 13,200 cpm per mR/hr (137Cs)
More Info

Alpha-Beta

Ludlum Model 43-1-1

Ludlum Model 43-1-1

  • Detector Type
    • ZnS(Ag) + Plastic Scintillator
  • Active Window Area
    • 83 cm2 (12.9 in2)
  • Efficiency
    • 239Pu : 30% 90Sr/90Y : 30% 14C : 4%
More Info
Ludlum Model 43-135-1

Ludlum Model 43-135-1

  • Detector Type
    • Gas Proportional For Large-Area Source Calibration
  • Active Window Area
    • 500 cm2 (77.4 in2) Windowless
  • Efficiency
    • 239Pu : 42% 230Th : 33% 99Tc : 55% 63Ni : 37% 90Sr/90Y : 55%
More Info
Ludlum Model 43-143-1

Ludlum Model 43-143-1

  • Detector Type
    • Gas Proportional
  • Active Window Area
    • 100 cm2 (15.5 in2)
  • Efficiency
    • 239Pu : 20% 14C : 15% 99Tc : 30% 90Sr/90Y : 20% Gamma : 1%
More Info
Ludlum Model 43-147

Ludlum Model 43-147

  • Detector Type
    • ZnS(Ag) + Plastic Scintillator
  • Active Window Area
    • 200 cm2 (31.0 in2)
  • Efficiency
    • 239Pu : 20% 99Tc : 13% 90Sr/90Y : 20%
More Info
Ludlum Model 43-2-2

Ludlum Model 43-2-2

  • Detector Type
    • ZnS(Ag) + Plastic Scintillator
  • Active Window Area
    • 9.7 cm2 (1.5 in2)
  • Efficiency
    • 239Pu : 25% 90Sr/90Y : 20% 14C : 5%
More Info
Ludlum Model 43-37 Series

Ludlum Model 43-37 Series

  • Detector Type
    • Large-Area Gas Proportional
  • Active Window Area
    • 584 cm2 (90.5 in2) or 821 cm2 (127 in2)
  • Efficiency
    • Gross Counting 239Pu : 20% 99Tc : 30% 90Sr/90Y : 30% Gamma 1%  Alpha-Beta Counting 239Pu : 17.5% 99Tc : 20% 90Sr/90Y : 20% Gamma 1% 
More Info
Ludlum Model 43-65-2

Ludlum Model 43-65-2

  • Detector Type
    • ZnS(Ag) + Plastic Scintillator
  • Active Window Area
    • 63 cm2 (9.8 in2)
  • Efficiency
    • 230Th : 20% 239Pu : 20% 99Tc : 15% 90Sr/90Y : 20% 14C : 1%
More Info
Ludlum Model 43-68

Ludlum Model 43-68

  • Detector Type
    • Rechargable Gas Proportional
  • Active Window Area
    • 126 cm2 (19.5 in2)
  • Efficiency
    • 239Pu : 20% 14C : 15%  99Tc : 30%  90Sr/90Y : 20% Gamma : 1%
More Info
Ludlum Model 43-89

Ludlum Model 43-89

  • Detector Type
    • ZnS(Ag) + Plastic Scintillator
  • Active Window Area
    • 125 cm2 (19.4 in2)
  • Efficiency
    • 239Pu : 20% 99Tc : 10% 90Sr/90Y : 20%
More Info
Ludlum Model 43-93

Ludlum Model 43-93

  • Detector Type
    • ZnS(Ag) + Plastic Scintillator
  • Active Window Area
    • 100 cm2 (15.5 in2)
  • Efficiency
    • 239Pu : 20% 99Tc : 15% 90Sr/90Y : 20%
More Info

Alpha

Ludlum Model 43-1

Ludlum Model 43-1

  • Detector Type
    • ZnS(Ag) Scintillator
  • Active Window Area
    • 83 cm2 (12.9 in2)
  • Efficiency
    • 239Pu : 33%
More Info
Ludlum Model 43-136

Ludlum Model 43-136

  • Detector Type
    • ZnS(Ag) Scintillator
  • Active Window Area
    • 65.3 cm2 (10.1 in2)
  • Efficiency
    • 239Pu : 20%
More Info
Ludlum Model 43-2

Ludlum Model 43-2

  • Detector Type
    • ZnS(Ag) Scintillator
  • Active Window Area
    • 9.7 cm2 (1.5 in2)
  • Efficiency
    • 239Pu : 30% 230Th : 30%
More Info
Ludlum Model 43-202

Ludlum Model 43-202

  • Detector Type
    • ZnS(Ag) Scintillator
  • Active Window Area
    • 17.8 cm2 (2.8 in2)
  • Efficiency
    • 239Pu : 18%
More Info
Ludlum Model 43-44

Ludlum Model 43-44

  • Detector Type
    • Air Proportional
  • Active Window Area
    • 76 cm2 (11.8 in2)
  • Efficiency
    • 239Pu : 8%
More Info
Ludlum Model 43-44-1

Ludlum Model 43-44-1

  • Detector Type
    • Air Proportional
  • Active Window Area
    • 154 cm2 (23.9 in2)
  • Efficiency
    • 239Pu : 8%
More Info
Ludlum Model 43-5

Ludlum Model 43-5

  • Detector Type
    • ZnS(Ag) Scintillator
  • Active Window Area
    • 76 cm2 (11.9 in2)
  • Efficiency
    • 239Pu : 13%
More Info
Ludlum Model 43-65

Ludlum Model 43-65

  • Detector Type
    • ZnS(Ag) Scintillator
  • Active Window Area
    • 63 cm2 (9.8 in2)
  • Efficiency
    • 239Pu : 17% 230Th : 17%
More Info
Ludlum Model 43-90

Ludlum Model 43-90

  • Detector Type
    • ZnS(Ag) Scintillator
  • Active Window Area
    •  125 cm2 (19.4 in2)
  • Efficiency
    • 239Pu : 20%
More Info
Ludlum Model 43-92

Ludlum Model 43-92

  • Detector Type
    • ZnS(Ag) Scintillator
  • Active Window Area
    • 100 cm2 (15.5 in2)
  • Efficiency
    • 239Pu : 20%
More Info

Beta

Ludlum Model 43-65-1

Ludlum Model 43-65-1

  • Detector Type
    • Plastic Scintillator For Beta Detection
  • Active Window Area
    • 63 cm2 (9.8 in2)
  • Efficiency
    • 99Tc : 15% 90Sr/90Y : 20% 14C : 1%
More Info
Ludlum Model 44-1

Ludlum Model 44-1

  • Detector Type
    • Plastic Scintillator For Beta Detection
  • Active Window Area
    • 9.7 cm2 (1.5 in2)
  • Efficiency
    • 14C : 7%
More Info
Ludlum Model 44-110

Ludlum Model 44-110

  • Detector Type
    • Windowless Gas Flow Proportional For Tritium/Beta Detection
  • Active Window Area
    • 126 cm2 (19.5 in2)
  • Efficiency
    • 3H : 25%
  • Features
    • Windowless Gas Flow Proportional Detector Active Window Area: 126 cm2 (19.5 in2) 3H Efficiency: 25%
More Info
Ludlum Model 44-116

Ludlum Model 44-116

  • Detector Type
    • Plastic Scintillator For Beta Detection
  • Active Window Area
    • 125 cm2 (19.4 in2)
  • Efficiency
    • 14C : 4% 90Sr/90Y : 30% 99Tc : 20%
More Info
Ludlum Model 44-142

Ludlum Model 44-142

  • Detector Type
    • Plastic Scintillator For Beta Detection
  • Active Window Area
    • 100 cm2 (15.5 in2)
  • Efficiency
    • 14C : 4% 90Sr/90Y : 30% 99Tc : 20%
More Info
Ludlum Model 44-21

Ludlum Model 44-21

  • Detector Type
    • NaI(Tl) + Plastic Scintillator For Beta-Gamma Detection
  • Active Window Area
    • 5.1 cm2 (0.8 in2)
  • Efficiency
    • 14C : 4% 32P : 28% 125I : 38% 129I : 19%
More Info
Ludlum Model 44-215

Ludlum Model 44-215

  • Detector Type
    • Plastic Scintillator For Beta Detection
  • Active Window Area
    • 20 cm2 (3.1 in2)
  • Efficiency
    • 99Tc : 33% 14C : 10% 90Sr/90Y : 33%
More Info
Ludlum Model 44-92

Ludlum Model 44-92

  • Detector Type
    • Gas Proportional For Beta-Gamma Detection
  • Active Window Area
    • 169 cm2 (26.2 in2)
  • Efficiency
    • 14C : 10% 99Tc : 13% 36Cl : 24% 90Sr/90Y : 26% 129I : 3% 57Co : 1.6% 55Fe : 1.2% 239Pu : 10%
More Info
Ludlum Model 44-98

Ludlum Model 44-98

  • Detector Type
    • BGO Scintillator For Beta-Gamma Detection
  • Active Window Area
    • 5 cm2 (0.8 in2)
  • Efficiency
    • 125I : 15% 129I : 8% 14C : 3%
More Info

Gamma GM

Ludlum Model 133 Series

Ludlum Model 133 Series

  • Description
    • Waterproof Gamma GM Detector Includes Models 133-2-1, 133-3-1, 133-4-1, 133-6-1, 133-7-1 Hard-wired 30 m (100 ft) Cable Detector performance specifications are the same as the corresponding Model 133 Series detector
  • Part Number
    • 47-2450
More Info
Ludlum Model 44-150 Series

Ludlum Model 44-150 Series

  • Detector Type
    • Energy-Compensated GM
  • Sensitivity (Cs-137)
    • 44-150-1: 4000 cpm per mR/hr 44-150-3: 13,500 cpm per mR/hr
  • Linear Range (w/o DTC)
    • 44-150-1: 0.1 to 50 mR/hr 44-150-3: 0.01 to 8 mR/hr
More Info
Ludlum Model 44-183

Ludlum Model 44-183

  • Detector Type
    • Energy-Compensated GM with Lead Shielding
  • Sensitivity (Cs-137)
    • 100 cpm per mR/hr
  • Linear Range (w/o DTC)
    • 1 mR/hr to 2 R/hr
More Info
Ludlum Model 44-38

Ludlum Model 44-38

  • Detector Type
    • GM with Beta Window
  • Sensitivity (Cs-137)
    • 1200 cpm per mR/hr
  • Linear Range (w/o DTC)
    • 0.05 to 50 mR/hr
More Info
Ludlum Model 44-6

Ludlum Model 44-6

  • Detector Type
    • GM with Beta Window
  • Sensitivity (Cs-137)
    • 1200 cpm per mR/hr
  • Linear Range (w/o DTC)
    • ±10% up to 50 mR/hr
More Info

Gamma Scintillator

Ludlum Model 44-10

Ludlum Model 44-10

  • Detector Type
    • NaI(Tl) Scintillator 5.1 x 5.1 cm (2 x 2 in.)
  • Sensitivity (Cs-137)
    • 900 cpm per µR/hr (137Cs)
  • Efficiency
    • 125I : 4% 57Co : 20% 137Cs : 9% 60Co : 15%
More Info
Ludlum Model 44-11

Ludlum Model 44-11

  • Detector Type
    • NaI(Tl) Scintillator 5.1 x 5.1 cm (2 x 2 in.)
  • Sensitivity (Cs-137)
    • 900 cpm per µR/hr (137Cs)
More Info
Ludlum Model 44-132

Ludlum Model 44-132

  • Detector Type
    • Plastic Scintillator 14.6 x 2.5 cm (5.75 x 1 in.)
  • Sensitivity (Cs-137)
    • 1500 cpm per µR/hr
More Info
Ludlum Model 44-159-1

Ludlum Model 44-159-1

  • Description
    •  Gamma Scintillator Detector 18 x 18 mm (0.7 x 0.7 in.) CsI(Tl) Scintillator Size (Dia. x L): 2.2 x 8.1 cm (0.875 x 3.2 in.) Sensitivity: 120 cpm per µR/hr
  • Part Number
    • 47-3820
More Info
Ludlum Model 44-2

Ludlum Model 44-2

  • Detector Type
    • NaI(Tl) Scintillator 2.5 x 2.5 cm (1 in. x 1 in.)
  • Sensitivity (Cs-137)
    • 175 cpm per µR/hr (137Cs)
  • Efficiency
    • 125I : 7% 57Co : 10% 137Cs : 3% 60Co : 3%
More Info
Ludlum Model 44-20

Ludlum Model 44-20

  • Detector Type
    • NaI(Tl) Scintillator 7.6 x 7.6 cm (3 x 3 in.)
  • Sensitivity (Cs-137)
    • 2300 cpm per μR/hr (137Cs)
  • Efficiency
    • 125I : 29%
More Info
Ludlum Model 44-62

Ludlum Model 44-62

  • Detector Type
    • NaI(Tl) Scintillator 1.3 x 2.5 cm (0.5 x 1 in)
  • Sensitivity (Cs-137)
    • 49 cpm per μR/hr (137Cs)
More Info

Low-Energy Gamma Scintillator

Ludlum Model 44-17

Ludlum Model 44-17

  • Detector Type
    • NaI(Tl) Scintillator 5.1 x 0.2 cm (2 x 0.08 in.)
  • Active Window Area
    • 17.8 cm2 (2.8 in2)
  • Energy Range
    • 10 to 200 keV
More Info
Ludlum Model 44-172

Ludlum Model 44-172

  • Detector Type
    • YSO Scintillator
  • Active Window Area
    • 5 cm2 (0.8 in2)
More Info
Ludlum Model 44-213

Ludlum Model 44-213

  • Detector Type
    • CsI Scintillator 12.7 x 0.12 cm (5 x 0.05 in.)
  • Active Window Area
    • 127 cm2(10.6 in2)
  • Energy Range
    • 10–200 keV
More Info
Ludlum Model 44-3

Ludlum Model 44-3

  • Detector Type
    • NaI(Tl) Scintillator 2.5 x 0.1 cm (1 x 0.04 in.)
  • Active Window Area
    • 5 cm2 (0.8 in2)
  • Energy Range
    • 10 to 60 keV
More Info

Neutron

Ludlum Model 42-30H

Ludlum Model 42-30H

  • Detector Type
    • 3He Tube Moderator: 25.4 cm (10 in.) dia.
  • Sensitivity (241Am/Be)
    • 20,000 cpm per mSv/h (200 cpm per mrem/hr)
  • Detection Range
    • Thermal to 12 MeV
More Info
Ludlum Model 42-31H

Ludlum Model 42-31H

  • Detector Type
    • 3He tube Moderator: 22.9 cm (9 in.) dia
  • Sensitivity (241Am/Be)
    • 10,000 cpm per mSv/h (100 cpm per mrem/hr )
  • Detection Range
    • Thermal to 12 MeV
More Info
Ludlum Model 42-38 WENDI-2

Ludlum Model 42-38 WENDI-2

  • Detector Type
    • 3He Tube Moderator: 22.9 cm (9 in.) dia.
  • Sensitivity (241Am/Be)
    • 450 cpm per mrem/hr
  • Detection Range
    • Thermal to 5 GeV
More Info
Ludlum Model 42-41L

Ludlum Model 42-41L

  • Detector Type
    • PRESCILA Proton Recoil Scintillator
  • Sensitivity (241Am/Be)
    • 350 cpm per mrem/hr
  • Detection Range
    • Thermal to 100 MeV
More Info
Ludlum Model 42-49 Series

Ludlum Model 42-49 Series

  • Detector Type
    • 3He Tube Moderator: 19.5 cm (7.7 in.) dia.
  • Sensitivity (241Am/Be)
    • 42-49: 10 cpm per µSv/h (100 cpm per mrem/hr) 42-49B: 4.5 cpm µSv/h (45 cpm per mrem/hr) 42-49B-1: 7.6 cpm per µSv/h (76 cpm per mrem/hr)
  • Detection Range
    • Thermal to 12 MeV
More Info
Ludlum Model 42-5

Ludlum Model 42-5

  • Detector Type
    • 6LiI Scintillator
  • Sensitivity (241Am/Be)
    • 45 cpm per mrem/hr
  • Detection Range
    • Thermal to 12 MeV
More Info

Pipe Detectors

Ludlum Model 44-159-1

Ludlum Model 44-159-1

  • Description
    •  Gamma Scintillator Detector 18 x 18 mm (0.7 x 0.7 in.) CsI(Tl) Scintillator Size (Dia. x L): 2.2 x 8.1 cm (0.875 x 3.2 in.) Sensitivity: 120 cpm per µR/hr
  • Part Number
    • 47-3820
More Info
Ludlum Model 43-98

Ludlum Model 43-98

  • Description
    •   Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 3.8 x 24.1 cm (1.5 x 9.5 in.) Active Window Area: 170.3 cm2
  • Part Number
    • 47-2596
More Info
Ludlum Model 44-159

Ludlum Model 44-159

  • Description
    • Gamma Scintillator Detector 18 x 18 mm (0.7 x 0.7 in.) CsI(Tl) Scintillator Size (Dia. x L): 2.5 x 7.1 cm (1 x 2.8 in.) Sensitivity: 120 cpm per µR/hr
  • Part Number
    • 47-3346
More Info
Ludlum Model 43-126

Ludlum Model 43-126

  • Description
    • Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 8.9 x 26.2 cm (3.5 x 10.3 in.)
  • Part Number
    • 47-3050
More Info
Ludlum Model 43-94

Ludlum Model 43-94

  • Description
    • Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 1.25 x 21.9 cm (0.5 x 8.6 in.) Active Window Area: 60.8 cm2
  • Part Number
    • 47-2569
More Info
Ludlum Model 44-157

Ludlum Model 44-157

  • Description
    • Gamma Scintillator Detector 5.1 x 5.1 cm (2 in. x 2 in.) NaI(Tl) Scintillator Size (Dia. x L): 8.9 x 15.5 cm (3.5 x 6.1 in.) Sensitivity: 900 cpm per µR/hr
  • Part Number
    • 47-3332
More Info
Ludlum Model 43-98-5

Ludlum Model 43-98-5

  • Description
    • Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 12.1 x 27.6 cm (4.75 x 10.9 in.) Active Window Area: 547.2 cm2
  • Part Number
    • 47-3928
More Info
Ludlum Model 44-162

Ludlum Model 44-162

  • Description
    • Gamma Scintillator Detector 7.6 x 7.6 cm (3 x 3 in.) NaI(Tl) Scintillator Size (Dia. x L): 19.1 x 24.1 cm (7.5 x 9.5 in.) Sensitivity: 2300 cpm per µR/hr
  • Part Number
    • 47-3385
More Info
Ludlum Model 43-111

Ludlum Model 43-111

  • Description
    • Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 2.5 x 21.7 cm (1 x 8.5 in.) Active Window Area: 121.6 cm2
  • Part Number
    • 47-2780
More Info

Sample Counter Heads

Ludlum Model 120

Ludlum Model 120

  • Detector Type
    • Alpha-Beta-Gamma Gas Flow Proportional
  • Max. Sample Size
    • 5.1 cm (2.0 in.) dia.
  • Efficiency
    • 14C : 10% 90Sr/90Y : 42% 230Th : 35% Gamma : 1%
More Info
Ludlum Model 182

Ludlum Model 182

  • Detector Type
    • For Radon Flask Sample Counting
  • Max. Sample Size
    • 6.1 x 12.7 cm (2.4 x 5 in.) [D x L]
More Info
Ludlum Model 203

Ludlum Model 203

  • Detector Type
    • Gamma NaI(Tl) Well Scintillator 5.1 x 4.6 cm (2 x 1.8 in.) [D x L]
  • Max. Sample Size
    • 1.7  x 3.9 cm (0.66 x 1.6 in.) [D x L]
  • Efficiency
    • 129I : 65% 137Cs : 33% 60C0 : 43%
More Info
Ludlum Model 243

Ludlum Model 243

  • Detector Type
    • Gamma NaI(Tl) Integral Line Well Scintillator 4.6 x 5.1 cm (1.8 x 2 in.) [D x L]
  • Max. Sample Size
    • 1.7 x 3.9 cm (0.66 x 1.6 in.) [D x L]
  • Efficiency
    • 125I : 80% 99mTc : 90% 137C : 33% 60Co : 43%
More Info
Ludlum Model 43-10

Ludlum Model 43-10

  • Detector Type
    • Alpha ZnS(Ag) Scintillator
  • Max. Sample Size
    • 5.7  x 1.1 cm (2.24 x 0.42 in.) [D x L]
  • Efficiency
    • 230Th : 37% 239Pu : 37%
More Info
Ludlum Model 43-10-1

Ludlum Model 43-10-1

  • Detector Type
    • Alpha-Beta ZnS(Ag) + Plastic Scintillator
  • Max. Sample Size
    • 5.7  x 1.1 cm (2.24 x 0.42 in.) [D x L]
  • Efficiency
    • 239Pu : 37% 230Th : 32% 238U : 39% 14C : 5% 99Tc : 27% 137Cs : 29% 99Sr/90Y : 26%
More Info
Ludlum Model 43-10-10

Ludlum Model 43-10-10

  • Detector Type
    • Alpha-Beta ZnS(Ag) + Plastic Scintillator
  • Max. Sample Size
    • 5.7  x 1.1 cm (2.24 x 0.42 in.) [D x L] Adapted for iCam Filters
  • Efficiency
    • 239Pu : 37% 230Th : 32% 238U : 39% 14C : 5% 99Tc : 27% 137Cs : 29% 99Sr/90Y : 26%
More Info
Ludlum Model 43-78

Ludlum Model 43-78

  • Detector Type
    • Alpha Zns(Ag) Scintillator
  • Max. Sample Size
    • 12.7 x 0.46 cm (5 x 0.18 in.) [D x L]
  • Efficiency
    • 230Th : 37% 239Pu : 37%
More Info
Ludlum Model 43-78-1

Ludlum Model 43-78-1

  • Detector Type
    • Beta Plastic Scintillator
  • Max. Sample Size
    • 12.7 x 0.46 cm (5 x 0.18 in.) [D x L]
  • Efficiency
    • 90Sr/90Y : 40% 14C : 12% 99Tc : 35%
More Info
Ludlum Model 43-78-2

Ludlum Model 43-78-2

  • Detector Type
    • Alpha-Beta ZnS(Ag) + Plastic Scintillator
  • Max. Sample Size
    • 7.6 x 0.46 cm (3 x 0.18 in.) [D x L]
  • Efficiency
    • 239Pu : 37% 90Sr/90Y : 37%
More Info
Ludlum Model 43-9

Ludlum Model 43-9

  • Detector Type
    • Alpha ZnS(Ag) Scintillator
  • Max. Sample Size
    • 2.5  x 0.15 cm (1 x 0.06 in.) [D x L]
  • Efficiency
    • 230Th : 30%
More Info
Ludlum Model 44-110-4

Ludlum Model 44-110-4

  • Detector Type
    • Alpha-Beta Windowless Gas Flow Proportional
  • Max. Sample Size
    • 5.1 x 0.9 cm (2.0 x 0.4 in.) [D x L]
  • Efficiency
    • 3H : 3% 14C : 21% 63Ni : 36% 239Pu : 42%
  • Features
    • Windowless Gas Flow Proportional Sample Counter Head Max. Sample Size: 5.1 x 0.9 cm (2.0 x 0.4 in.) [D x L]
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Sample Holders

Ludlum Model 180-1

Ludlum Model 180-1

  • Detector Type
    • 5.1 cm (2 in.) dia.
  • Max. Sample Size
    • Compatible with all 5.1 cm (2 in.) OD detectors, including:
      • Model 43-2
      • Model 43-2-2
      • Model 44-1
      • Model 44-2
      • Model 44-3
      • Model 44-21
      • Model 44-98
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Ludlum Model 180-12

Ludlum Model 180-12

  • Detector Type
    • 5.8 x 2.97 cm (2.3 x 1.17 in.) [D x L]
  • Max. Sample Size
    • Lead Shielding Compatible with:
      • Model 44-10
      • Model 44-11
      • Model 44-17
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Ludlum Model 180-15

Ludlum Model 180-15

  • Detector Type
    • 5.1 x 1.5 cm (2 x 0.6 in.) [D x L]
  • Max. Sample Size
    • Compatible with Model 44-40
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Ludlum Model 180-15-3

Ludlum Model 180-15-3

  • Detector Type
    • 5.1 x 1.5 cm (2 x 0.6 in.) [D x L]
  • Max. Sample Size
    • Compatible with:
      • Model 43-92
      • Model 43-93
      • Model 44-142
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Ludlum Model 180-16

Ludlum Model 180-16

  • Detector Type
    • 10.2 cm (4 in.) dia.
  • Max. Sample Size
    • Compatible with Model 43-1, 43-1-1
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Ludlum Model 180-1L

Ludlum Model 180-1L

  • Detector Type
    • 5.1 cm (2 in.) dia.
  • Max. Sample Size
    • Lead Shielding Compatible with all 5.1 cm (2 in.) OD detectors, including:
      • Model 43-2
      • Model 43-2-2
      • Model 44-1
      • Model 44-2
      • Model 44-3
      • Model 44-21
      • Model 44-98
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Ludlum Model 180-2

Ludlum Model 180-2

  • Detector Type
    • 5.1 cm (2 in.) dia.
  • Max. Sample Size
    • Compatible with Model 44-9
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Ludlum Model 180-24

Ludlum Model 180-24

  • Detector Type
    • 5.1 cm (2 in.) dia.
  • Max. Sample Size
    • Compatible with all 5.1 cm (2 in.) OD detectors, including:
      • Model 43-2
      • Model 43-2-2
      • Model 44-1
      • Model 44-2
      • Model 44-3
      • Model 44-21
      • Model 44-98
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Ludlum Model 180-28

Ludlum Model 180-28

  • Detector Type
    • 5.1 cm (2 in.) dia.
  • Max. Sample Size
    • Compatible with Model 26-Series
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Ludlum Model 180-4

Ludlum Model 180-4

  • Detector Type
    • 5.1 cm (2 in.) dia.
  • Max. Sample Size
    • Compatible with Model 44-7
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Ludlum Model 180-7

Ludlum Model 180-7

  • Detector Type
    • 5.1 cm (2 in.) dia.
  • Max. Sample Size
    • Compatible with all 6.6 cm (2.6 in.) OD detectors, including:
      • Model 44-10
      • Model 44-17
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Waterproof Detectors

Ludlum Model 44-2-14

Ludlum Model 44-2-14

  • Description
    • Waterproof Gamma Scintillator Detector 2.5 x 2.5 cm (1 x 1 in.) NaI(Tl) Scintillator Aluminum Housing Hard-Wired 3 m (10 ft.) Cable Detector performance specifications are the same as the Model 44-2
  • Part Number
    • 47-2473
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Ludlum Model 42-48

Ludlum Model 42-48

  • Description
    • Waterproof 3He Neutron Detector Hard-Wired 10.7 m (35 ft.) Cable
  • Part Number
    • 47-3827
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Ludlum Model 44-62-2

Ludlum Model 44-62-2

  • Description
    • Waterproof Gamma Scintillator Detector 1.3 x 2.5 cm (0.5 x 1 in.) NaI(Tl) Scintillator Hard-wired 30 m (100 ft.) Cable Detector performance specifications are the same as the Model 44-62
  • Part Number
    • 47-2778
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Ludlum Model 44-10-10

Ludlum Model 44-10-10

  • Description
    • Waterproof Gamma Scintillator Detector 5.1 x 5.1 cm (2 x 2 in.) NaI(Tl) Scintillator Aluminum Housing Separate 3 m (10 ft.) Cable Detector performance specifications are the same as the Model 44-10
  • Part Number
    • 47-3022
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Ludlum Model 44-2-23

Ludlum Model 44-2-23

  • Description
    • Waterproof Gamma Scintillator Detector 2.5 x 2.5 cm (1 x 1 in.) NaI(Tl) Scintillator Stainless Steel Housing Hard-Wired 3 m (10 ft.) Cable Detector performance specifications are the same as the Model 44-2
  • Part Number
    • 47-3656
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Ludlum Model 44-10-5

Ludlum Model 44-10-5

  • Description
    • Waterproof Gamma Scintillator Detector 5.1 x 5.1 cm (2 x 2 in.) NaI(Tl) Scintillator Stainless Steel Housing Hard-Wired 3 m (10 ft.) Cable Detector performance specifications are the same as the Model 44-10
  • Part Number
    • 47-2427
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Ludlum Model 133 Series

Ludlum Model 133 Series

  • Description
    • Waterproof Gamma GM Detector Includes Models 133-2-1, 133-3-1, 133-4-1, 133-6-1, 133-7-1 Hard-wired 30 m (100 ft) Cable Detector performance specifications are the same as the corresponding Model 133 Series detector
  • Part Number
    • 47-2450
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Ludlum Model 9-7 Underwater Housing

Ludlum Model 9-7 Underwater Housing

  • Description
    • Waterproof Housing for Model 9-7 Ion Chamber Detectors (Models 9-7-LD, 9-7-BM, 9-7-BH) Hard-Wired 18.3 m (60 ft.) or 30 m (100 ft.) Cable
  • Part Number
    • 4536-046 (60 ft. cable) 4536-047 (100 ft. cable)
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