Cross-section measurements and production of 72Se with medium to high energy protons using arsenic containing targets-Reference-Cited by-同舟云学术

Cross-section measurements and production of 72Se with medium to high energy protons using arsenic containing targets

Published:2019-01-10 Issue:4 Volume:107 Page:279-287
ISSN:2193-3405
Container-title:Radiochimica Acta
language:en
Short-container-title:

Author:

DeGraffenreid Anthony J.¹,Medvedev Dmitri G.¹,Phelps Timothy E.²,Gott Matthew D.²,Smith Suzanne V.¹,Jurisson Silvia S.²,Cutler Cathy S.¹

Affiliation:

1. Collider Accelerator Department , Brookhaven National Laboratory , Upton, NY 11973 , USA

2. Department of Chemistry , University of Missouri , Columbia, MO 65211 , USA

Abstract

Abstract Experiments were performed to evaluate production of 72Se, parent radionuclide of the positron emitter 72As, at high energy at the Brookhaven Linac Isotope Producer (BLIP). Excitation functions for 75As(p, xn)72/75Se in the 52-105 MeV energy range were measured by irradiating thin gallium arsenide (GaAs) wafers. Maximum cross section value for the natAs(p, 4n)72Se reaction in the energy range was 103±9 mb at 52±1 MeV. Production size GaAs and arsenic metal (As°) targets were irradiated with 136 μA and 165 μA beam current possessing an initial Linac energy of 117 MeV. A total of 3.77±0.1 GBq (102±3 mCi) of 72Se was produced from a GaAs target at a calculated target entrance energy of 105.4 MeV, and 13.8±0.3 GBq (373±8 mCi) of 72Se from an As° target at a calculated incident energy of 49.5 MeV irradiated for 116.5 h and 68.9 h, respectively.

Funder

Brookhaven National Laboratory

National Science Foundation

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/ract-2018-2931/pdf

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