RESIDUAL RADIATION OF THE LRL 184-INCH CYCLOTRON | Zendy

R. Boom | Zendy; K. S. Toth | Zendy; A. Zucker | Zendy

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RESIDUAL RADIATION OF THE LRL 184-INCH CYCLOTRON

Author(s) -

R. Boom,

K. S. Toth,

A. Zucker

Publication year - 1961

Language(s) - English

Resource type - Reports

DOI - 10.2172/4015932

Subject(s) - cyclotron , spectral line , cyclotron radiation , physics , radiation , gamma ray , radiochemistry , atomic physics , materials science , chemistry , nuclear physics , electron , astronomy

Residual radioactivity at the Lawrence Radiation Laboratory 184-Inch Cyclotron was measured during November 1960. The study was conducted along three principal lines: (1) general survey of radiation levels in the cyclotron vault, (2) activation of foils placed near the cyclotron, and (3) gamma-ray spectra of the cyclotron gap region, including dee structure. Initial radiation levels were less than 8 r/hr which dropped to abcut 10 mr/hr after 48 hr. The observed activities induced in copper foils were Cu/sup 64/ and Co/sup 58/; in iron foils, Mn/sup 52/, Mn/sup 54/, and Mn/sup 56/; in aluminum foils Na/sup / 2>s/sup 4/ The gamma-ray spectra from the gap region included two intense long-lived peaks, at 510 and 810 kev, caused principally by Co/sup 58/. (auth

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