Radioisotope yields from 1.85-GeV protons on Mo and 1.85- and 5.0-GeV protons on Te

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.820· OSTI ID:450504

Bardayan, D W; Hindi, M M ^[1]; da Cruz, M T; Chan, Y D; Garcia, A; Larimer, R; Lesko, K T; Norman, E B; Rossi, D F; Wietfeldt, F E ^[2]; Barghouty, A F; Zlimen, I ^[3]

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1. Physics Department, Tennessee Technological University, Cookeville, Tennessee 38505 (United States)
2. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
3. Physics Department, Roanoke College, Salem, Virginia 24153 (United States)

Radioisotope yields from 1.85-GeV proton interactions in a natural isotopic composition Mo target and those from 1.85- and 5.0-GeV protons in natural Te targets were measured at Lawrence Berkeley National Laboratory{close_quote}s Bevatron. The radioisotope yields were determined by {gamma}-counting the targets using 100-cm{sup 3} coaxial Ge detectors following the irradiations. Cross sections were determined for the production of 36 radioactive nuclides, ranging from Z=35, A=74 to Z=43, A=97, from the Mo target and for 43 radioactive nuclides, ranging from Z=35, A=75 to Z=53, A=130 from the Te targets. The average deviations of the experimental cross sections from those predicted by the semiempirical isotopic cross sections of Silberberg and Tsao were 53{percent} for p+Mo at 1.85 GeV, 66{percent} for p+Te at 1.85 GeV, and 35{percent} for p+Te at 5.0 GeV. These deviations are higher than those found previously for medium and heavy targets and for elemental cross sections. The minimum production cross section of {sup 91}Nb, which may be of interest as a cosmic-ray chronometer, was found to be 18{plus_minus}3 mb for the p+Mo reaction. {copyright} {ital 1997} {ital The American Physical Society}

• DOE Contract Number: FG02-96ER40955; FG05-87ER40314
• OSTI ID: 450504
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 55; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
GE SEMICONDUCTOR DETECTORS
GEV RANGE 01-10
MOLYBDENUM 95 TARGET
PROTON REACTIONS
RADIOISOTOPES
SYNTHESIS
TELLURIUM 128 TARGET