ELASTIC SCATTERING OF 20.35-Mev PROTONS BY Zn$sup 64$, Zn$sup 66$, AND Zn$sup 6$$sup 8$

Journal Article · Tue Sep 15 00:00:00 EDT 1959 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.115.1700· OSTI ID:4209071

Boom, R W; Richardson, J R

ABS>The absolute differential cross section for the elastic scattering of (20.35 plus or minus 0.25)-Mev protons was measured for enriched Zn/ sup 64/, Zn/sup 66/, and Zn/sup 68/ foils. In the angular range of 30 to 160 deg about 50 measurements were made for each foil (spaced from 1 to 5 deg ) to an estimated accuracy of about 5% standard deviation. Scattered protons were detected by nuclear emulsions wrapped around a 4-in. diameter scattering chamber, all angles being exposed simultaneously. Detector energy resolution is 2.5%, angular resolution is 1 deg standard deviation, and relative angular shifts are determincd to 0.1 deg . Correction was made for the finite sizes of beam and detector and for multiple scattering in the target and in the detector stopper. The plus or minus 0.25Mev energy spread includes maximum and minimum energies due to beam drift, beam spread, and target foil thickness. Three minima are found for each isotopei Zn/sup 64/ at 63 deg , 104 deg , and 142 deg ; Zn/sup 66/ at 62 deg , 102.5 deg , and 142 deg ; and Zn/sup 68/ at 61 deg , 101 deg , and 142 deg . The absolute cross sections are approximately the same except at the third minima, where for Zn/sup 64/, Zn/sup 66/, and Zn/sup 68/ they are respectively, 1.46, 1. 07, and 0.61 mb/sterad. (auth)

• Research Organization: Univ. of California, Los Angeles
• NSA Number: NSA-14-004016
• OSTI ID: 4209071
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Vol. Vol: 115; Other Information: Orig. Receipt Date: 31-DEC-60
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

PHYSICS
ANGULAR DISTRIBUTION- CONFIGURATION- DETECTION- ELASTIC SCATTERING- ENERGY RANGE- ENRICHMENT- ERRORS- FOILS- MEASURED VALUES- - NUCLEAR EMULSIONS- PROTONS- RESOLUTION- SCATTERING- ZINC 64- ZINC 66- ZINC 68
ANGULAR DISTRIBUTION- CONFIGURATION- ELASTIC SCATTERING- ENERGY RANGE- - ENRICHMENT- ERRORS- FOILS- MEASURED VALUES- MULTIPLE SCATTERING- PROTONS- SCATTERING- TARGETS- THICKNESS- ZINC 64- ZINC 66- ZINC 68