Interpretation of Experimental ( n , 2 n ) Excitation Functions

Radiochemically determined (n,2n) excitation functions for Sc/sup 45/, Ti/sup 46/, Ni/sup 58/, Cu/sup 65/, Ge/sup 70/, As/sup 7/ s/sup 5/, Sr/sup 84/, Rb/sup 85/, Rb/sup 87/s Y/sup 89/, Zr/sup 90/, Sn/sup 112/, Cd/sup 116/ Sb/sup 123/ ans U/sup 2/< s3>s/sup 8/ have been interpreted in terms of...

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Veröffentlicht in:	Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, 1961-08, Vol.123 (3), p.859-864
Hauptverfasser:	Barr, D. W., Browne, C. I., Gilmore, J. S.
Format:	Artikel
Sprache:	eng
Schlagworte:	ANTIMONY 123 ARSENIC 75 CADMIUM 116 COLLECTIVE MODEL COPPER 65 CROSS SECTIONS ENERGY LEVELS EXCITATION GERMANIUM 70 MASS NEUTRON BEAMS NEUTRONS NICKEL 58 NUCLEAR MODELS NUCLEAR REACTIONS PHYSICS RADIOCHEMISTRY RUBIDIUM 85 RUBIDIUM 87 SCANDIUM 45 STATISTICS STRONTIUM 84 TARGETS TIN 112 TITANIUM 46 URANIUM 238 YTTRIUM 89 ZIRCONIUM 90
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Zusammenfassung:	Radiochemically determined (n,2n) excitation functions for Sc/sup 45/, Ti/sup 46/, Ni/sup 58/, Cu/sup 65/, Ge/sup 70/, As/sup 7/ s/sup 5/, Sr/sup 84/, Rb/sup 85/, Rb/sup 87/s Y/sup 89/, Zr/sup 90/, Sn/sup 112/, Cd/sup 116/ Sb/sup 123/ ans U/sup 2/< s3>s/sup 8/ have been interpreted in terms of the statistical model of nuclear reactions. Values of the level density parameter a are obtained and correlated with mass number. A procedure is outlined for predicting the magnitude of any (n,2n) cross section from the nuclear content of the target material. Two level density formulations are studied, and approximations customarily made in calculations of this sort are examined quantitatively. (auth)
ISSN:	0031-899X
DOI:	10.1103/PhysRev.123.859