ANALYSIS OF EXCITATION FUNCTIONS IN CM(C,XN)NO REACTIONS

被引：127

作者：

SIKKELAND, T

GHIORSO, A

NURMIA, MJ

机构：

[1] Lawrence Radiation Laboratory, University of California, Berkeley

来源：

PHYSICAL REVIEW | 1968年 / 172卷 / 04期

关键词：

D O I：

10.1103/PhysRev.172.1232

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Excitation functions for the synthesis of No251, No252, No253, No254, No255, No256, and No257 in the bombardments of Cm244, Cm246, and Cm248 with C12 and C13 are presented. A good fit to these functions has been obtained by the use of the Jackson formula as modified to include fission and angular-momentum effects. Experimental values of ΓnΓfav are compared with the semiempirical formula of Fujimoto and Yamaguchi and the following new empirical formula: log10(ΓnΓf)=-0.276Z+f(N), where f(N) is 5.46+0.140N for N153 and 19.23+0.050N for N153. A brief discussion of ΓnΓf systematics of transberkelium nuclides and the effect of the 152-neutron subshell is given. © 1968 The American Physical Society.

引用

页码：1232 / +

页数：1

共 21 条

[1] A REVISED SEMIEMPIRICAL ATOMIC MASS FORMULA [J].

CAMERON, AGW .

CANADIAN JOURNAL OF PHYSICS, 1957, 35 (09) :1021-1032

[2]

ENDT PM, 1962, NUCLEAR REACTIONS ED

[3]

Flerov GN., 1964, SOV ENERGY, V17, P1046, DOI [10.1007/BF01116295, DOI 10.1007/BF01116295]

[4]

FLEROV GN, 1964, ATOM ENERG, V17, P310

[5] NOTE ON VERY LARGE COSMIC-RAY STARS [J].

FUJIMOTO, Y ;

YAMAGUCHI, Y .

PROGRESS OF THEORETICAL PHYSICS, 1950, 5 (01) :76-81

[6] ISOTOPES OF ELEMENT 102 WITH MASS 251 TO 258 [J].

GHIORSO, A ;

SIKKELAND, T ;

NURMIA, MJ .

PHYSICAL REVIEW LETTERS, 1967, 18 (11) :401-+

[7]

GHIORSO A, 1963, 3 P C REACT COMPL ED

[8] NUCLEAR CONSTITUTION AND THE INTERPRETATION OF FISSION PHENOMENA [J].

HILL, DL ;

WHEELER, JA .

PHYSICAL REVIEW, 1953, 89 (05) :1102-1145

[9]

HUIZENGA JR, 1962, NUCLEAR REACTIONS

[10] A SCHEMATIC MODEL FOR (P, XN) CROSS SECTIONS IN HEAVY ELEMENTS [J].

JACKSON, JD .

CANADIAN JOURNAL OF PHYSICS, 1956, 34 (08) :767-779

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