P-type HPGe Coaxial Detectors

LIQUID NITROGEN COOLED DETECTOR FOR HIGH RESOLUTION GAMMA SPECTROSCOPY

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DESCRIPTION:

Germanium detectors are semiconductor diodes having a p-i-n structure in which the intrinsic (I) region is sensitive to ionizing radiation, particularly X rays and gamma rays.
When photons interact with the material within the depleted volume of a detector, charge carriers (holes and electrons) are produced and are swept by the electric field to the P and N electrodes. This charge, which is in proportion to the energy deposited in the detector by the incoming photon, is converted into a voltage pulse by an integral charge sensitive preamplifier.
Because germanium has relatively low band gap, these detectors must be cooled with Liquid nitrogen (temperature of 77 °K).

APPLICATION:

Detection of Gamma rays in nuclear energetics and environmental control, in industry and scientific research, in medicine and other applications.

STANDARD SET:

The P-type HPGe Coaxial Detectors complete set is composed by the following components:

  • HPGe coaxial detector
  • Preamplifier with cooled input stage
  • Dewar vessel
  • Cable set
  • Documentation

In addition to standard supply, the following accessories are available upon request:

  • Hexagon Multichannel Analyzer
  • Analytical Software packages:
    • quantitative and qualitative analysis
    • Gamma spectra modeling and efficiency registration calculation for complex geometry objects
    • extended radionuclide library
  • Liquid nitrogen storage and filling system
  • Liquid nitrogen sensor and monitor
  • Cable set extension

GCD Series Specification

Model Efficiency (%) Energy resolution FWHM at 122 keV (eV) Energy resolution FWHM at 1.33 MeV (keV) Peak / Compton ratio Peak Shape FW.1M / FWHM Peak Shape FW.02M / FWHM
GCD – 10 175 10 825 1.75 41:1 1.90 2.65
GCD – 15 180 15 825 1.80 46:1 1.90 2.65
GCD – 20 180 20 850 1.80 51:1 1.90 2.65
GCD – 25 185 25 850 1.85 55:1 1.90 2.65
GCD – 30 185 30 875 1.85 58:1 1.90 2.65
GCD – 35 190 35 875 1.90 60:1 1.90 2.65
GCD – 40 190 40 895 1.90 62:1 1.90 2.65
GCD – 50 190 50 895 1.90 64:1 1.90 2.65
GCD – 60 200 60 1000 2.00 68:1 2.00 3.00
GCD – 70 200 70 1000 2.00 73:1 2.00 3.00
GCD – 80 210 80 1000 2.10 77:1 2.00 3.00
GCD – 100 220 100 1000 2.10 81:1 2.00 3.00
GCD – 120 220 120 1000 2.10 83:1 2.00 3.00
GCD – 140 220 140 1100 2.20 86:1 2.00 3.00
GCD – 160 230 160* 1150 2.20 88:1 2.00 3.00

*Detectors with higher efficiency are available

GCDX Series Specification

ENERGY RANGE:

  • 3 keV – 10 MeV with Be input window
  • 5 keV – 10 MeV with Carbon fiber input window
Model Efficiency (%) Energy resolution FWHM at 5.9 keV (eV) Energy resolution FWHM at 122 keV (eV) Energy resolution FWHM at 1.33 MeV (keV) Peak / Compton ratio Peak Shape FW.1M / FWHM Peak Shape FW.02M / FWHM
GCDX – 10 175 10 400 720 1.75 41:1 1.90 2.65
GCDX – 15 180 15 450 740 1.80 46:1 1.90 2.65
GCDX – 20 180 20 460 760 1.80 51:1 1.90 2.65
GCDX – 25 185 25 480 775 1.85 55:1 1.90 2.65
GCDX – 30 185 30 500 800 1.85 58:1 1.90 2.65
GCDX – 35 190 35 550 830 1.90 60:1 1.90 2.65
GCDX – 40 190 40 600 850 1.90 62:1 1.90 2.65
GCDX – 50 190 50 620 875 1.90 64:1 1.90 2.65
GCDX – 60 200 60 670 900 2.00 68:1 2.00 3.00
GCDX – 70 200 70 700 950 2.00 73:1 2.00 3.00
GCDX – 80 210 80 750 950 2.10 77:1 2.00 3.00
GCDX – 100 210 100* 800 1000 2.10 81:1 2.00 3.00

*Detectors with higher efficiency are available

Plenty of cryostat geometries are available

Highlights

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2017-07-21T13:07:55+00:00