31 research outputs found
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ANALYZING POWERS OF {sup 3}He({vector p},p){sup 3}He ELASTIC SCATTERING BETWEEN 30 AND 50 MeV
Analyzing power data have been obtained for {sup 3}He({vector p},p){sup 3}He elastic scattering at seven energies between 30 and 50 MeV at laboratory angles between 20° and 160°. Errors are typically less than 0.01. These results supplement earlier differential and total reaction cross-section and analyzing power data and new data obtained with a polarised {sup 3}He target
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FURTHER EVIDENCE FOR THE DOMINANCE OF NUCLEON-NUCLEON P-WAVE FORCES IN VECTOR POLARIZATIONS IN N-d SCATTERING BELOW 15 MeV
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Measurements of cross sections relevant to. gamma. -ray line astronomy
Gamma-ray production cross sections have been measured for the ..gamma..-ray lines which are mostly strongly excited in the proton bombardment of C, O, Mg, Si, and Fe targets of natural isotopic composition. High resolution germanium detectors were used to collect ..gamma..-ray spectra at proton bombarding energies of 20, 30, 33, 40 and 50 MeV. 6 refs., 6 figs
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Cosmic ray half life of sup 56 Ni
A search for the {beta}{plus} decay of {sup 56}Ni has established an upper limit on the branching ratio of 7.2 {times} 10{sup {minus} 7} for the most likely such transition. This provides a lower limit of 2.3 {times} 10{sup 4} years for the cosmic ray half life of {sup 56}Ni. 2 refs., 2 figs
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DEPOLARIZATION AND THE SPIN-SPIN INTERACTION IN p-9Be ELASTIC SCATTERING
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Effects of s-process branchings on stellar and meteoritic abundances
The level scheme and electromagnetic properties of /sup 148/Pm have been studied using /sup 149/Sm(d,/sup 3/He) and /sup 148/Nd(p,n..gamma..) reactions. Combining these measurements with estimates for E2/M1 decay branching ratios leads to the tentative conclusion that /sup 148/Pm/sup g,m/ are in thermal equilibrium during the s-process. The branch at /sup 148/Pm then leads to an inferred s-process neutron density of 3 x 10/sup 8/ cm/sup -3/