منابع مشابه
Minimizing the statistical error in capture cross-section measurements
Measurements of the neutron capture cross-section are performed by measurement of the capture rate of a sample placed in a neutron beam. The capture rate is measured by surrounding the sample with gamma-ray detectors. The capture rate is corrected for background and divided by the rate of neutrons incident on the sample in order to obtain the capture yield. The neutron capture cross-section can...
متن کاملResonance structure in the Li- photodetachment cross section.
We report on the first observation of resonance structure in the total cross section for the photodetachment of Li −. The structure arises from the autode-taching decay of doubly excited 1 P o states of Li − that are bound with respect to the 3p state of the Li atom. Calculations have been performed for both Li − and H − to assist in the identification of these resonances. The lowest lying reso...
متن کاملcross section
We calculate the cross section for the dissociation of J/ψ by kaons within the framework of a meson exchange model. We find that, depending on the values of the coupling constants used, the cross section can vary from 5 mb to 30 mb at √ s ∼ 5 GeV. In relativistic heavy ion collisions J/ψ suppression has been recognized as an important tool to identify the possible phase transition to quark-gluo...
متن کاملSection: Magnetic Resonance Imaging
Overview One of the most popular segmentation methods in medical imaging is the Active Shape Model or Active Appearance Model. With this approach, the segmentation is performed based on knowledge of a certain type of organs, e.g., brain, heart or bone. There are hundreds of research results have been produced with this approach, but do you know that there is something more interesting and chall...
متن کاملEffect of diameter of nanoparticles and capture cross-section library on macroscopic dose enhancement in boron neutron capture therapy
PURPOSE The aim of this study is evaluation of the effect of diameter of (10)B nanoparticles and various neutron capture cross-section libraries on macroscopic dose enhancement in boron neutron capture therapy (BNCT). MATERIAL AND METHODS MCNPX Monte Carlo code was used for simulation of a (252)Cf source, a soft tissue phantom and a tumor containing (10)B nanoparticles. Using (252)Cf as a neu...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2006
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.74.055802