Validity of the Four-Parameter Empirical Formula in Approximating the Response Functions for Gamma-ray, Neutron, and Secondary Gamma-ray Skyshine Analyses
نویسندگان
چکیده
منابع مشابه
Gamma Ray Interaction and "Neutron Capture Gamma Ray Technique for the Analysis of Cu-Ni Alloys"
The neutron capture gamma-ray technique was used for the analysis of Cu-Ni alloys, widely used in industry. The two elements, which are very close in atomic number, have widely separated characteristic capture gamma quanta. A sensitivity of 7x10 counts per unit thermal neutron flounce per 1% change in Ni/Cu ratio was obtained. Samples of any shape can be analyzed without a need for any special ...
متن کاملThe correction for the gamma-ray component in neutron therapy.
Neutron beams for therapy always contain some gamma ray contamination that varies with depth and with distance from the beam axis. The problem therefore arises how the varying gamma ray contribution should be accounted for in dose specification. Not infrequently a "total effective dose" DE is quoted that is equal to the neutron dose plus the gamma ray dose divided by a constant weight factor ta...
متن کاملGamma-ray Bursts: the Four Crises
We discuss some open problems concerning the origin and the emission mechanism of gamma-ray bursts (GRBs) in light of recent developments. If GRBs originate at extragalactic distances, we are facing four crises: (1) an energy crisis, models have to account for more than 10 ergs of energy emitted in the gamma-ray band; (2) a spectral crisis, emission models have to account for the surprising ‘sm...
متن کاملAnalogies between neutron and gamma-ray imaging
Although the physics describing the interactions of neutrons with matter is quite different from that appropriate for hard x-rays and gamma rays, there are a number of similarities that allow analogous instruments to be developed for both types of ionizing radiation. A pinhole camera, for example, requires that the radiation obeys some form of geometrical optics, that a material can be found to...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Nuclear Science and Technology
سال: 2003
ISSN: 0022-3131,1881-1248
DOI: 10.1080/18811248.2003.9715393