نتایج جستجو برای: hpge gamma
تعداد نتایج: 122940 فیلتر نتایج به سال:
Poland faces a choice of an environmental radiation monitoring systems (ERMS) for newly designed Nuclear Power Plant (NPP). Contemporary radiation monitoring systems can be based on gamma detector cooperated with Multichannel Analyzer (MCA). This solution will give a tool for very fast assessment of radiological situation around NPP and allows authority to react in case of radiological circumst...
We present recent results on the structure of one-valence-particle $^{41}$Ca and $^{49}$Ca, one-valence-hole $^{47}$Ca, nuclei. The isotopes interest were populated via cold-neutron capture reactions $^{40}$Ca(n,$\gamma$), $^{48}$Ca(n,$\gamma$) $^{46}$Ca(n,$\gamma$), respectively. experiments performed at Institut Laue-Langevin, within EXILL campaign, which employed a large array HPGe detectors...
The amounts of radioactivity in the igneous rocks have been investigated; samples were collected from the total of eight basalt rock types in the northeastern of Kurdistan region/Iraq. The activity concentration of Ra (U) series, Ac (Th) series, K and Cs were measured using Planar HPGe and NaI(Tl) detectors. Along the study area the radium equivalent activities Raeq in Bq/Kg of samples under in...
To investigate the possibility to characterize radioactive wastes using available information and measurements in a coherent frame, Bayesian formalism is built couple gamma-ray spectrometry tomographic scans. The gamma ray performed with four High Purity Germanium (HPGe) detectors placed around waste scanning 2 cm thick slices of drum Gamma Scanning mode. tomography provides density matrix iden...
The natural (40K) and anthropogenic (137Cs) radioactivity concentration in four different typologies of early childhood (up to two years old) foods, i.e., homogenized fruit, meat, biscuits baby pasta, produced Italy sold Italian large retailers, was investigated through High Purity Germanium (HPGe) gamma spectrometry. present study is carried out with the aim to: (i) evaluate background levels ...
Strontium-89 (Sr-89) alone or with concurrent chemotherapy has a role in the treatment of patients with prostate cancer (PCP). The schedules for repeated doses of Sr-89 or for concurrent chemotherapy is undetermined. The objective of this study was to measure the effective half-life (Te) of Sr-89 using a detector available in a nuclear research facility. Blood and urine samples obtained from PC...
We report on the use of grazing incidence gamma-ray mirrors to serve as a narrow bandpass filter for advanced non-destructive analysis (NDA) of spent nuclear fuel. The purpose of the mirrors is to limit the radiation reaching a HPGe detector to narrow spectral bands around characteristic emission lines from fissile isotopes in the fuel. This overcomes the normal rate issues when performing gamm...
ABSTRACT Background : The application of DU emanation for first time contaminated certain areas in the south west region of Iraq after the second Gulf war (1991). These contaminated areas were discovered in 1994. Radioactive contamination was detected using the nuclear enterprise PCM5/1 in soil samples collected from two regions near by grazing lands. This study was done for assessment of D...
The interdiction of nuclear materials during illegal transportation requires both detection of radiation and identification of radionuclides in order to distinguish among the various categories of nuclides and their implied threat. Interdiction regimes, based upon available technologies, were developed rapidly after the tragic events of 9-11. In general, a low resolution or "no-resolution" port...
Segmented coaxial HPGe (High Purity Germanium) detectors have recently been shown to be feasible for Gamma Emission Tomography (GET). This type of detector allows a combination high efficiency and energy resolution in gamma spectrometry irradiated nuclear fuel. The ultimate aim developing segmented GET measurements is achieve spatial facilitate imaging rod-internal features interrogation smalle...
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