A method for calculating proton-nucleus elastic cross-sections.
Recently [Nucl. Instr. and Meth. B 145 (1998) 277; Extraction of in-medium nucleon-nucleon amplitude from experiment, NASA-TP, 1998], we developed a method of extracting nucleon-nucleon (N-N) cross-sections in the medium directly from experiment. The in-medium N-N cross-sections form the basic ingredients of several heavy-ion scattering approaches including the coupled-channel approach developed at the NASA Langley Research Center. We investigated [Proton-nucleus total cross-sections in coupled-channel approach, NASA/TP, 2000; Nucl. Instr. and Meth. B 173-174 (2001) 391] the ratio of real to imaginary part of the two body scattering amplitude in the medium. These ratios are used in combination with the in-medium N-N cross-sections to calculate proton-nucleus elastic cross-sections. The agreement is excellent with the available experimental data. These cross-sections are needed for the radiation risk assessment of space missions.
Tripathi
R K
RK
NASA Langley Research Center, Hampton, VA 23681-0001, USA. r.k.tripathi@larc.nasa.gov
Wilson
J W
JW
Cucinotta
F A
FA
D000535:Aluminum; D001608:Beryllium; D002244:Carbon; D019471:Elementary Particle Interactions; D004601:Elementary Particles; D020450:Heavy Ions; D007501:Iron; D007854:Lead; D009686:Nuclear Physics; D011522:Protons; D011829:Radiation Dosage; D011874:Radiometry; D018570:Risk Assessment; D012542:Scattering, Radiation; D013026:Space Flight; D014501:Uranium
D011522:Protons; D007854:Lead; D014501:Uranium; D002244:Carbon; D000535:Aluminum; D007501:Iron; D001608:Beryllium