Table of Contents
What is a good detector of gamma rays?
The thallium-activated sodium iodide detector, or NaI(Tl) detector, responds to the gamma ray by producing a small flash of light, or a scintillation. The scintillation occurs when scintillator electrons, excited by the energy of the photon, return to their ground state.
How do HPGe detectors work?
Under the influence of an electric field, electrons and holes travel to the electrodes, where they result in a pulse that can be measured in an outer circuit. This pulse carries information about the energy of the original incident radiation.
How germanium detectors are different from Si Li detector?
intensity is much larger in Ge detectors, compared with Si detectors, due to the higher x-ray fluorescence yield and larger linear absorption coefficients for Ge [6]. This represents a fundamental limitation to the use of Ge detectors in the analysis of complex x-ray spectra in the energy region above 11.1 keV.
Can gamma rays be used as weapon?
American military scientists are developing a weapon which kills by delivering an enormous burst of high-energy gamma rays, it is claimed today. The bomb, which produces little fallout, blurs the distinction between conventional and nuclear weapons, and experts have already warned it could spark a new arms race.
What are the best high purity germanium radiation detectors?
Gamma-X (GMX) N-type High Purity Germanium (HPGe) Coaxial Radiation Detectors GWL (Well) P-type Reverse Coaxial Radiation Detectors GLP Series Planar HPGe Low Energy Radiation Detectors Application Specific Radiation Detectors High Performance High Purity Germanium (HPGe) Coaxial Radiation Detectors for Safeguards and Non-Destructive Assay
How does a germanium detector work?
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. Charge carriers, produced by the interaction of X and gamma rays in the intrinsic region, are swept by the electric field to the P and N electrodes where are collected.
What type of cooling is required for germanium semiconductor radiation detectors?
Cryogenic cooling is required for germanium semiconductor radiation detectors. In order to support various counting geometries, ORTEC offers a wide range of cooling options ranging from standard LN2 systems, to advanced electro-mechanical cryocoolers such as the ICS™.
What are the different types of GEM detectors?
PROFILE GEM P-type Coaxial and Semi-Planar HPGe Radiation Detectors Gamma-X (GMX) N-type High Purity Germanium (HPGe) Coaxial Radiation Detectors GWL (Well) P-type Reverse Coaxial Radiation Detectors