نتایج جستجو برای: neutron irradiation
تعداد نتایج: 108726 فیلتر نتایج به سال:
Neutron Activation Analysis (NAA) is an established nuclear analytical technique with applications in a broad range of scientific and technological fields. Typically, conventional NAA involves analysis of small material portions of 10 to 100 g in mass. However, analysis of samples of a larger mass implies a number of additional advantages such as (a) analysis of objects too precious to remove ...
The process of thermal neutron absorption in the coldworked Pd cathodes during electrolysis in NaOD/D2O solution under irradiation by Ultraweak Thermalized Neutron Field (UTNF) was studied. It was found that during deuterium loading the probability of thermal neutron absorption in a strained Pd is increased by a factor 8 compared to the unstrained (annealed) sample or sample where loading is no...
With the completion of the fission converter epithermal neutron beam (FCB) at MIT, which has a higher epithermal neutron flux (1.3 x 1010 neutrons/cm 2sec) than the current m-67 beam, future BNCT irradiations conducted by the Harvard-MIT BNCT program could be reduced from approximately 3 hours per beam to just a few minutes. Therefore, it is essential to determine the optimal time after BPA adm...
PECVD technology was used for deposition of a-SiC:H films at different temperature from SiH4 and CH4 gas mixture. A P-type silicon wafer with resistivity 2-7 cm and (100) orientation was used as the substrate for the growth of SiC films. Irradiation of samples by fast neutrons with fluence 1.4x10 14 cm -2 was used. Raman band feature intensity decreasing after neutron irradiation. The measured ...
We have constructed a Bayesian neural network model that predicts the change, due to neutron irradiation, of the Charpy ductile-brittle transition temperature (ΔDBTT) of low activation martensitic steels given a 40-dimensional set of data from the literature. The irradiation doses were < 100 displacements per atom (dpa). Results show the high significance of irradiation temperature and (dpa) in...
Results from aging tests on the bakelite used for the CMS RPCs are presented. Samples of melaminic bakelite were exposed to a heavy gamma and neutron radiation. Data on the bulk resistivity were collected while accumulating gamma and neutron doses and particles #uence up to values well beyond those expected in 10 years of RPCs operation in the barrel region of CMS. The test with gamma radiation...
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 ...
Boron Neutron Capture Therapy (BNCT) [4, 5] is a form of a radiation therapy used for treatment of some kinds of cancer (mainly glioblastoma multiforme) which, due to their character, are hard to be extracted with surgical methods. The BNCT method involves the delivery of a capture compound − the B isotope is usually used – which preferentially concentrates in the cancer tissue, followed by the...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید