1,721,011 research outputs found
Long-range alpha-particle characteristics and cross-section anisotropy in 233U fission induced by 40 MeV protons
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LONG-RANGE ALPHA-PARTICLES AND LIGHT CHARGED NUCLEI IN THE NEUTRON-INDUCED FISSION OF 233U
No full textA 6Li semiconductor sandwich neutron spectrometer with background discrimination by identification of reaction products
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Total photoabsorption cross sections for H-1, H-2 and He-3from 200 to 800 MeV
No full textThe total photoabsorption cross sections for 1H, 2H, and 3He have been measured for incident photon energies ranging from 200 to 800 MeV. The 3He data are the first for this nucleus. By using the large acceptance detector DAPHNE in conjunction with the tagged photon beam facility of the MAMI accelerator in Mainz, cross sections of high precision have been obtained. The results show clearly the changes in the nucleon resonances in going from 1H to 3He. In particular, for the D13 region the behavior for 3He is intermediate between that for 1H, 2H, and heavier nuclei. This will provide a strong constraint to the theories that are presently being developed with a view to explaining the apparent ‘‘damping’’ of higher resonances in heavy nuclei
An automated system to control the polarization voltage of silicon detectors
No full textA remote controlled system to maintain polarization voltage across a silicon detector within a user defined window is described. The system regulates silicon bias voltage, caused by increased leakage current due to radiation damage, by switching external resistors to maintain a constant voltage drop across the bias load resistor, independent of leakage current. This Z80 microprocessor based system links with the host computer by a RS-232 serial port. The voltage resolution of the system is less than 0.2 V in the worst cas
Development of a method to extend, by Boron neutron capture process, the therapeutic possibilities of the liver autograft
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