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Recoil ranges of 2. 73 MeV tritons and yields of /sup 18/F produced by the /sup 16/O(t,n)/sup 18/F reaction in neutron-irradiated lithium compounds containing oxygen

Journal Article · · J. Chem. Phys.; (United States)
OSTI ID:5619446
The /sup 16/O(t,n)/sup 18/F reaction induced by recoil tritons in neutron-irradiated crystalline lithium compounds containing oxygen has been studied with emphasis laid upon the determination of recoil triton ranges. The physical parameters required for quantitative description of successive (n,..cap alpha..) -- (t,n) processes have been enumerated. The yields of /sup 18/F predicted from the calculation agreed well with the observed ones for a variety of lithium compounds. Mean cross sections, averaged over the triton recoil range, for the /sup 16/O(t,n)/sup 18/F reaction in solids were rather constant (sigma-bar/sub F/= (9.87 +- 0.35) x 10/sup -26/ cm/sup 2/) and were independent of the triton range. The triton ranges in polycrystalline substances can be determined from /sup 18/F yield measurements. Ranges derived from the present results include 6.2 +- 0.4 mg cm/sup -2/ (Li/sub 2/O(s)), 7.1 +- 0.6 mg cm/sup -2/ (LiOH (s)), and 7.0 +- 0.6 mg cm/sup -2/ (Li/sub 2/CO/sub 3/(s)).
Research Organization:
Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken 319-11, Japan
OSTI ID:
5619446
Journal Information:
J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 72:5; ISSN JCPSA
Country of Publication:
United States
Language:
English

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