Kinetic-energy distributions in the reactor neutron fission ofU232and thermal neutron fission ofPu241andCm245

1977 ◽  
Vol 16 (2) ◽  
pp. 716-720 ◽  
Author(s):  
A. Ramaswami ◽  
Satya Prakash ◽  
S. B. Manohar ◽  
S. P. Dange ◽  
P. P. Venkatesan ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Thermal Neutron ◽  
Reactor Neutron ◽  
Energy Distributions ◽  
Neutron Fission ◽  
Thermal Neutron Fission ◽  
Kinetic Energy Distributions

TIME-OF-FLIGHT FISSION STUDIES ON U233, U235 AND Pu239

1962 ◽  
Vol 40 (11) ◽  
pp. 1626-1663 ◽  
Author(s):  
J. C. D. Milton ◽  
J. S. Fraser
Keyword(s):  
Fine Structure ◽  
Kinetic Energy ◽  
Excitation Energy ◽  
Thermal Neutron ◽  
Time Of Flight ◽  
Neutron Fission ◽  
Thermal Neutron Fission ◽  
The Mean ◽  
New Feature ◽  
Symmetric Fission

The prompt mass and kinetic energy distributions resulting from the thermal neutron fission of U233, U235, and Pu239 have been reinvestigated using time-of-flight methods to measure simultaneously the velocities of the fragment pairs. A new feature shown by the present work is the existence of fine structure in the prompt mass yields. This fine structure is most pronounced at high total kinetic energies where the fragments have little excitation energy and may be associated with irregularities in the energy release as a function of mass. The fine structure is most noticeable in U235 and least in Pu239; the fragments of U235 have the lowest average excitation and those of Pu239, the highest. Another feature, which is confirmed by this work, is the large drop in total kinetic energy when the fragments are near symmetry. This decrease is about 35 Mev and is consistent either with a picture in which the nucleus with 50 protons is especially preferred or with one in which fragments at symmetric fission have an abnormally high excitation energy and a consequent large number of neutrons. The mean kinetic energies for thermal neutron fission of U233, U235, and Pu239 were found to be 167.6, 168.3, and 175.0 Mev with an error of ± 1.7 Mev.

Kinetic energy distribution in the thermal neutron fission of 233U and 239Pu

1972 ◽  
Vol 34 (9) ◽  
pp. 2685-2697 ◽  
Author(s):  
Satya Prakash ◽  
S.B. Manohar ◽  
S.P. Dange ◽  
A. Ramaswami ◽  
M.V. Ramaniah
Keyword(s):  
Kinetic Energy ◽  
Energy Distribution ◽  
Thermal Neutron ◽  
Kinetic Energy Distribution ◽  
Neutron Fission ◽  
Thermal Neutron Fission

scholarly journals Prompt Neutrons From 236U Fission Fragments

1971 ◽  
Vol 24 (4) ◽  
pp. 821 ◽  
Author(s):  
JW Boldeman ◽  
AR de L Musgrove ◽  
RL Walsh
Keyword(s):  
Kinetic Energy ◽  
Thermal Neutron ◽  
Neutron Emission ◽  
Total Kinetic Energy ◽  
Counting Method ◽  
Neutron Fission ◽  
Fragment Mass ◽  
Fission Fragments ◽  
Thermal Neutron Fission ◽  
The Mean

Measurements have been made of prompt neutron emission in the thermal neutron fission of 235 U and the mean neutron emission per fragment has been obtained for particular values of the fragment mass and total kinetic energy. A direct neutron counting method was employed and a comparison is made with data from previous experiments of this type.

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