نتایج جستجو برای: gamma and fast neutron doses
تعداد نتایج: 16894404 فیلتر نتایج به سال:
The present study deals with a new method for measuring the power of a reactor. This method uses gamma and neutron radiation resulted from the entire reactor structure, without changing its structure (online). In terms of functionality, this method can measure the reactor power in real-time and report it instantly. In order to obtain the relationship between reactor power and gamma and neutron ...
Until now, the multiple biological effects of ionizing radiation on liver have been reported. However, there has not been any reports of fast neutron-mediated liver injuries including liver regeneration or fibrosis. Here, we described the biological effects of acute fast neutron irradiation on the liver. After the fast neutron irradiation of 0, 0.25, 1, 2, 4 and 8 Gy on mice, hepatocyte necrosi...
background: to evaluate the effects of hyperthermia (ht) on the frequency of chromosomal aberrations induced by a low dose of neutron or γ-rays in human peripheral blood lymphocytes. materials and methods: blood samples were exposed to ht (41.5°c for 30 and 60min, 43°c for 15 and 30min), 10 cgy neutron or γ-rays, ht + neutron/γ, and neutron/γ + ht. after standard cell culture, harvesting, fixat...
In order to simulate neutron shields, MCNP5 calculation code was used and three types of homogeneous and separated shield multilayer arrangement, irradiated with 241Am-Be neutron sources were investigated. In these shields, the polyethylene (C2H4) and polystyrene (C8H8) were used as moderator material, and the boron carbide (B4C), as a thermal neutron absorber material and stainless steel as a ...
In this research, the applicability of several metal hydrides as neutron moderator and shielding for D-D fusion sources has been investigated by MCNPX code. The results have been investigated in three steps to find the materials with lower thermal, fast and total neutron fluxes than conventional shielding materials. The results show relative advantages of LaNi5H6, VH, TiH2, TaH, Mg (BH4)2, YH2,...
The BC-523A detector is a boron-10-loaded liquid scintillation detector that is sensitive to not only fast neutrons and gamma rays, but also to thermal neutrons. This detector has recently attracted the attention of several researchers and has shown promise for neutron spectroscopy. Several efforts have been made to accurately characterize this detector for several neutron and gamma-ray energie...
The neutron-induced capture-to-fission cross section ratio of $^{233}\mathrm{U}$ has been measured at the Los Alamos Neutron Science Center National Laboratory in energy range from 0.7 eV to 250 keV. detector setup combines Detector for Advanced Capture Experiments (DANCE) measure $\ensuremath{\gamma}$ rays generated both capture and fission reactions, neutron array DANCE neutrons. This is firs...
A unique, new stand-alone acoustic inertial confinement nuclear fusion test device was successfully tested. Experiments using four different liquid types were conducted in which bubbles were self-nucleated without the use of external neutrons. Four independent detection systems were used (i.e., a neutron track plastic detector to provide unambiguous visible records for fast neutrons, a detector...
Sensitive and fast detection of neutrons gamma rays is vital for homeland security, high-energy physics, proton therapy. Fast-neutron detectors rely on light organic scintillators, γ-ray use heavy inorganic scintillators semiconductors. Efficient mixed-field using a single material highly challenging due to their contradictory requirements. Here we report hybrid perovskites (C8H12N)2Pb(Br1−xClx...
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