Identification of 142Xe and measurement of its cumulative yield from thermal-neutron fission of 235U

1960 ◽  
Vol 12 (3-4) ◽  
pp. 201-205 ◽  
Author(s):  
K. Wolfsberg ◽  
D.R. Nethaway ◽  
H.P. Malan ◽  
A.C. Wahl
Keyword(s):  
Thermal Neutron ◽  
Cumulative Yield ◽  
Neutron Fission ◽  
Thermal Neutron Fission

THE RATIO OF THE DIRECT TO THE CUMULATIVE YIELD OF 135Xe IN THE THERMAL NEUTRON FISSION OF 233U, 235U, 239Pu, AND 241pu

1966 ◽  
Vol 44 (1) ◽  
pp. 237-246 ◽  
Author(s):  
A. Okazaki ◽  
W. H. Walker ◽  
C. B. Bigham
Keyword(s):  
Neutron Flux ◽  
Thermal Neutron ◽  
Decay Curve ◽  
Time Shift ◽  
Cumulative Yield ◽  
Β Decay ◽  
Neutron Fission ◽  
Short Irradiation ◽  
Thermal Neutron Fission ◽  
Γ Ray

The ratio of the direct to cumulative yields of 135Xe produced in thermal neutron fission has been determined by measuring the growth and decay of this nuclide in irradiated 233U, 235U, 239Pu, and 241Pu. After a short irradiation in a low neutron flux, the amount of 135Xe increases and reaches a maximum at about 11 hours after the end of the irradiation. The direct yield of 135Xe modifies the time this maximum is reached. The ratio of the direct to cumulative yields was determined by measuring the time shift of the growth and decay curve. The amount of 135Xe was measured as a function of time after the end of irradiation by counting the 249-keV γ ray accompanying the β decay of 135Xe with a lithium-drifted germanium-diode spectrometer. The ratio of the direct to the cumulative yield was found to be 0.195 ± 0.016, 0.044 ± 0.017, 0.162 ± 0.025, and 0.070 ± 0.040 for 233U, 235U, 239Pu, and 241Pu fission respectively.

Energy Distribution of Mass-97 Fission Fragments from Thermal-Neutron Fission of Uranium-235

1956 ◽  
Vol 104 (4) ◽  
pp. 1046-1053 ◽  
Author(s):  
Bernard L. Cohen ◽  
Anna Foner Cohen ◽  
Charles D. Coley
Keyword(s):  
Energy Distribution ◽  
Thermal Neutron ◽  
Neutron Fission ◽  
Fission Fragments ◽  
Thermal Neutron Fission

Angular correlation of neutrons from thermal-neutron fission of 235U

1978 ◽  
Vol 78 (5) ◽  
pp. 564-567 ◽  
Author(s):  
C.B. Franklyn ◽  
C. Hofmeyer ◽  
D.W. Mingay
Keyword(s):  
Thermal Neutron ◽  
Angular Correlation ◽  
Neutron Fission ◽  
Thermal Neutron Fission

Independent isomer yield ratio ofRb90from thermal neutron fission ofU235

1985 ◽  
Vol 32 (4) ◽  
pp. 1327-1334 ◽  
Author(s):  
P. L. Reeder ◽  
R. A. Warner ◽  
G. P. Ford ◽  
H. Willmes
Keyword(s):  
Thermal Neutron ◽  
Yield Ratio ◽  
Neutron Fission ◽  
Thermal Neutron Fission
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