Co$sup 57$ DECAY SCHEME
The weak gamma radiations from Co/sup 57/ were studied. In addition to the well known 14, 123, and 137 kev gamma rays, a 708 kev gamma ray was observed, having an intensity of 2 x 10/sup -3/ gamma rays per disintegration. No anaihilation radiation was observed; an upper limit of 5 x 10/sup -4/ can be put on the number oi positrons per disi tegration. There was no evidence for any other gamma rays. Although peaks appear in the pulse-height spectrum at 100 kev and 30 kev, they can be accounted for by scattering and x-ray escape effects in the scintillator. (auth) l3909 Forward differential (n,p) cross sections were measured with a proportional counter-scirtillation counter telescope for 14.1-Mev neutrons on the following nuclei: Rh/sup 103/ Ag (natural), Cd (natural), In/sup 115/, Sn/sup 116/, Sn/sup 120/, Sb (natural), and Te (natural). The measurements were made with an angular spread of about sintering time 15 and cover the proton energy range 4 to 15 Mev. A decrease in differential cross section occurs with increasing Z reaching a minimum at Z = 50 of about 1 mb/s, thereaffer rising abruptly at Z = 51 to 40 mb/s. At Z = 52, the cross section is again about 1 mb/ s. (auth)
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge
- NSA Number:
- NSA-13-013908
- OSTI ID:
- 4249788
- Journal Information:
- Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 10
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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