scholarly journals SOME MEASUREMENTS OF PROMPT-NEUTRON FISSION YIELD (anti $nu$p) IN THERMAL- NEUTRON FISSION OF $sup 232$U, $sup 238$Pu, $sup 241$Pu, $sup 241$Am, /sup 242m/Am, $sup 243$Cm, $sup 245$Cm, AND IN SPONTANEOUS FISSION OF $sup 244$Cm.

1969 ◽  
Author(s):  
A.H. Jaffey ◽  
J.L. Lerner
Keyword(s):  
Thermal Neutron ◽  
Spontaneous Fission ◽  
Prompt Neutron ◽  
Fission Yield ◽  
Neutron Fission ◽  
Thermal Neutron Fission

THE FISSION YIELD OF I131 IN THE THERMAL NEUTRON FISSION OF U235

1953 ◽  
Vol 31 (2) ◽  
pp. 120-125 ◽  
Author(s):  
Rosalie M. Bartholomew ◽  
F. Brown ◽  
R. C. Hawkings ◽  
W. F. Merritt ◽  
L. Yaffe
Keyword(s):  
Thermal Neutron ◽  
Half Life ◽  
Extraction Techniques ◽  
Fission Yield ◽  
Disintegration Rate ◽  
Neutron Fission ◽  
Thermal Neutron Fission

The fission yield of I131 has been investigated using improved extraction techniques and disintegration rate measurements. The value obtained for the fission yield is (3.1 ± 0.1)%. This is relative to a Ba140 reference fission yield of 6.1%. The half-life for I131 has been determined and found to be 8.05 ± 0.01 days.

scholarly journals Yields of products in the spontaneous fission of 252Cf by direct γ-ray spectroscopy

1983 ◽  
Vol 61 (4) ◽  
pp. 649-651 ◽  
Author(s):  
L. Toppare ◽  
H. N. Erten ◽  
N. K. Aras
Keyword(s):  
Fine Structure ◽  
Thermal Neutron ◽  
Spontaneous Fission ◽  
Graphical Method ◽  
Spectroscopy Technique ◽  
Neutron Fission ◽  
Fragment Mass ◽  
Thermal Neutron Fission ◽  
Γ Ray

Yields of products both in the light and heavy sides in the spontaneous fission of 252Cf were measured by direct γ-ray spectroscopy technique. By suitably choosing collection, cooling, and counting times, it was possible to observe products with half-lives between 1 min and 1 h. A definite fine structure, as observed in the case of thermal neutron fission of 235U and 239Pu, was not observed. A graphical method was utilized to obtain the number of neutrons as a function of fragment mass using cumulative chain yields.

DETERMINATION OF THE ABSOLUTE FISSION YIELD OF Ba140 IN THERMAL NEUTRON FISSION OF U235

1954 ◽  
Vol 32 (11) ◽  
pp. 1017-1024 ◽  
Author(s):  
L. Yaffe ◽  
H. G. Thode ◽  
W. F. Merritt ◽  
R. C. Hawkings ◽  
F. Brown ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Neutron Monitor ◽  
Half Life ◽  
Fission Yield ◽  
Disintegration Rate ◽  
Neutron Fission ◽  
Before And After ◽  
Thermal Neutron Fission ◽  
The Absolute

The absolute fission yield of Ba140 in the thermal neutron fission of U235 has been determined to be (6.32 ± 0.24)%. The reaction B10(n, α)Li7 was used as a neutron monitor and the B10/B11 ratio determined mass spectrometrically before and after neutron bombardment. The Ba140 disintegration rate was determined using 4π counting techniques. The half-life of La140 has been found to be 40.31 ± 0.06 hr.

THE YIELD OF Cs138 IN THERMAL NEUTRON FISSION OF U235

1956 ◽  
Vol 34 (3) ◽  
pp. 201-205 ◽  
Author(s):  
Rosalie M. Bartholomew ◽  
A. P. Baerg
Keyword(s):  
Thermal Neutron ◽  
Half Life ◽  
Fission Yield ◽  
Neutron Fission ◽  
Counting Technique ◽  
A Value ◽  
Thermal Neutron Fission

The yield of Cs138 in thermal neutron fission of U235 has been investigated using the 4π counting technique. The value obtained for the fission yield is (7.22 ± 0.29)% based on a value of 6.32% for the fission yield of Ba140. The half-life of Cs138 was determined and found to be 32.2 ± 0.1 min.

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