Bienvenue chez nous!
Logo Ex Libris

Detection of Special Nuclear Material with High Purity Germanium and Mercuric Iodide Gamma Detectors

  • Couverture cartonnée
  • 128 Nombre de pages
Texte du rabat The Defense Threat Reduction Agency (DTRA) contracted for two gamma radiation detectors: mercuric iodide (HgI2) and... Lire la suite
CHF 32.50
Impression sur demande - l'exemplaire sera recherché pour vous.

Description

Texte du rabat

The Defense Threat Reduction Agency (DTRA) contracted for two gamma radiation detectors: mercuric iodide (HgI2) and electromechanically cooled (EMC) high purity germanium (HPGe) to support arms control inspection efforts. This project investigated whether these detectors could measure the quality and quantity of special nuclear material (SNM), particularly Pu-239 for the treaty verification mission. The project investigated two areas of detector capabilities: 1) HgI2 and HPGe detector performance necessary to characterize the quality of plutonium and the presence of shielding materials and 2) HgI2 and EMC HPGe detector performance degradation by high noise levels and EMC HPGe detector performance degradation caused by electromechanical-cooling. The first area studied the response functions of each of the detectors necessary to meet the detection objectives: measure the Pu-239/Pu 240 ratio to identify weapons grade plutonium and to identify a phony weapon. The second area of detector performance evaluated was the EMC HPGe detector's cooling capabilities and its effect on the performance of the detector. The results show that neither of the detectors was ideally capable of supporting DTRA's requirements. The HgI2 detector did not have sufficient efficiency or resolution to distinguish between Weapon Grade and Reactor Grade Plutonium. The EMC system suffered from grounding problems that degraded the resolution and efficiency. An initial study, evaluating the ability of detectors to determine the presence of a simulated tamper within the SNM physics package, showed great promise for identifying phony weapons.

Détails sur le produit

Titre: Detection of Special Nuclear Material with High Purity Germanium and Mercuric Iodide Gamma Detectors
Auteur:
Code EAN: 9781288255078
ISBN: 1288255071
Format: Couverture cartonnée
nombre de pages: 128
Poids: g
Taille: H246mm x B189mm x T8mm
Année: 2012