NEUTRON ACTIVATION CROSS SECTION OF TECHNETIUM-98
The cross section for the reaction Tc/sup 88/(n, gamma )Tc/sup 99m/ was determined by thermal neutron irradiation of a cyclotron-produced sample containing Tc/sup 95/, Tc/sup 97m/, Tc/sup 97g/, Tc/sup 98/, and Tc/sup 99/. The degree of selectivity and background reduction required to permit an accurate measurement of the Tc/sup 98/ content, 2.68 plus or minus 0.54 disintegrations per minute, was attained by means of BETA -(740-kev gamma ) coincidence counting. At a thermal flux of 2.1 x 10/sup 12/ neutrons cm/sup -2/ sec/sup -1/ , a saturation activity of 375 plus or minus 85 dis/min Tc/sup 99m/ per dis/min of Tc/sup 98/ was obtained. Using the latest value of the half life of Tc/sup 98/ , (1.5 plus or minus 0.7) x 10/sup 6/ years, one finds a cross section of 2.6 plus or minus 1.3 barns. Relative cross sections are also given for the production of several technetium isotopes by bombardment of molybdenum with 10.2- Mev deuterons. (auth)
- Research Organization:
- Univ. of Chicago
- NSA Number:
- NSA-12-010123
- OSTI ID:
- 4325993
- 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- Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 110; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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