Charge Distribution in Fission: Fractional Cumulative Fission Yields ofBa143andBa144from Thermal-Neutron-Induced Fission ofU235

1969 ◽  
Vol 179 (4) ◽  
pp. 1188-1193 ◽  
Author(s):  
N. G. Runnalls ◽  
D. E. Troutner ◽  
Robert L. Ferguson
Keyword(s):  
Thermal Neutron ◽  
Charge Distribution ◽  
Induced Fission ◽  
Fission Yields

INDEPENDENT YIELDS OF 124Sb AND 126sb IN THERMAL NEUTRON INDUCED FISSION AND THEIR IMPLICATION ON THE EMPIRICAL Zp FUNCTION

1965 ◽  
Vol 43 (9) ◽  
pp. 2493-2507 ◽  
Author(s):  
P. O. Strom ◽  
G. R. Grant ◽  
A. C. Pappas
Keyword(s):  
Thermal Neutron ◽  
Charge Distribution ◽  
Distribution Curve ◽  
Neutron Emission ◽  
Shell Effect ◽  
Shell Effects ◽  
Fission Fragments ◽  
Induced Fission ◽  
Fission Yields ◽  
Proton Shell

The independent fission yields in thermal neutron induced fission of 235U have been measured to be (9.5 ± 1.4)•10−6% and (1.04 ± 0.17)•10−3% for 124gSb and 126gSb, respectively. The total independent yields for all isomers of these nuclides are estimated to be (1.2 ± 0.2)•10−5% for 124Sb and (3.7 ± 0.6)•10−3% for 126Sb using a Huizenga–Vandenbosch approach for estimating population of isomeric states.These data do not seem to support a 50 proton shell effect on the Zp function, using the "unique" charge distribution curve of Wahl. A revised Wahl plot based on recent information on neutron emission from individual fission fragments is given and discussed in view of shell effects in fission. It is shown that the effect of the Zp function of the 50 proton shell is very small.

Nuclear-charge distribution forA=121from thermal-neutron-induced fission ofU235

1985 ◽  
Vol 31 (4) ◽  
pp. 1334-1339 ◽  
Author(s):  
Larry Robinson ◽  
Arthur C. Wahl ◽  
Tomasz M. Semkow ◽  
Andrew E. Norris
Keyword(s):  
Thermal Neutron ◽  
Charge Distribution ◽  
Nuclear Charge ◽  
Nuclear Charge Distribution ◽  
Induced Fission

Nuclear charge distribution of mass-separated isobars from thermal-neutron-induced fission of 235U

1975 ◽  
Vol 247 (1) ◽  
pp. 74-90 ◽  
Author(s):  
H.-G. Clerc ◽  
K.-H. Schmidt ◽  
H. Wohlfarth ◽  
W. Lang ◽  
H. Schrader ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Charge Distribution ◽  
Nuclear Charge ◽  
Nuclear Charge Distribution ◽  
Induced Fission

Fission yields at different fission-product kinetic energies for thermal-neutron-induced fission of 239Pu

1984 ◽  
Vol 430 (1) ◽  
pp. 21-60 ◽  
Author(s):  
C. Schmitt ◽  
A. Guessous ◽  
J.P. Bocquet ◽  
H.-G. Clerc ◽  
R. Brissot ◽  
...  
Keyword(s):  
Fission Product ◽  
Thermal Neutron ◽  
Induced Fission ◽  
Fission Yields

Nuclear charge distribution of heavy fission fragments from thermal-neutron-induced fission of235U

1970 ◽  
Vol 231 (1) ◽  
pp. 59-97 ◽  
Author(s):  
Ewald Konecny ◽  
Helmut Gunther ◽  
Helmut Rösler ◽  
Günter Siegert ◽  
Heinz Ewald
Keyword(s):  
Thermal Neutron ◽  
Charge Distribution ◽  
Nuclear Charge ◽  
Fission Fragments ◽  
Nuclear Charge Distribution ◽  
Fission Of235u ◽  
Induced Fission

Cumulative yields of stable and long-lived isotopes of ruthenium and palladium in neutron-induced fission

1978 ◽  
Vol 56 (10) ◽  
pp. 1340-1352 ◽  
Author(s):  
Masako Shima ◽  
H. G. Thode ◽  
R. H. Tomlinson
Keyword(s):  
Thermal Neutron ◽  
Isotope Dilution ◽  
Yield Curve ◽  
Mass Region ◽  
Mass Yield ◽  
Neutron Fission ◽  
Significant Depression ◽  
Thermal Neutron Fission ◽  
Induced Fission ◽  
Fission Yields

The relative cumulative yields of nine stable and long-lived isotopes of ruthenium and palladium (masses 101 to 110) produced in the thermal neutron fission of 233U and in the thermal and epicadmium neutron fission of 235U and 239Pu have been measured using a solid source mass spectrometer and isotope dilution techniques. Absolute yields of these isotopes for the thermal neutron fission of 233U, 235U, and 239Pu are obtained using normalization procedures. These yields provide the first experimentally determined yields of the palladium masses 105, 106, 107, 108, and 110.In the thermal fission of 233U and 235U the ruthenium isotope yields obtained are in general agreement with previously determined values, although discrepancies exist of the order of 10% at masses 103, 104, and 106 for thermal fission of 235U.A plot of the ruthenium and palladium isotope mass yields together with the previously determined yields for the cadmium and tin isotopes indicate a significant depression in the mass yield curve at masses 111 and 114 for 233U and 235U thermal fission, respectively. In the 235U epicadmium fission, yields at even mass numbers are relatively higher than those at odd numbers, resulting in a zigzag yield curve in the 101 to 110 mass region.

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