TY - JOUR
T1 - Experimental study of some important characteristics of the thermal neutron induced fission of 237Np
AU - Wagemans, C.
AU - Allaert, E.
AU - Caïtucoli, F.
AU - D'hondt, P.
AU - Barreau, G.
AU - Perrin, P.
PY - 1981/10/12
Y1 - 1981/10/12
N2 - Fission fragment mass and kinetic energy distributions and their correlations have been studied for the thermal neutron induced fission of 237Np. The global mass distribution is rather smooth, apart from a weak shoulder at μH = 140-141. When low excitation events are selected, fine structures associated with the charge of the fragments are observed. Furthermore, there is a sudden increase in Ek for μH > 155, which is probably due to a spherical shell N = 50 in the light fragment and the corresponding deformed (but stable) heavy fragments with masses in the rare earth region. For the average (pre-neutron emission) total fragment kinetic energy, a value of 176.4 ± 0.6 MeV has been obtained, in agreement with the systematics. Also the prompt neutron emission curve v(m*) has been calculated, which shows the well-known saw-tooth shape. Finally, the energy distribution and the emission probability of the ternary α-particles have been determined.
AB - Fission fragment mass and kinetic energy distributions and their correlations have been studied for the thermal neutron induced fission of 237Np. The global mass distribution is rather smooth, apart from a weak shoulder at μH = 140-141. When low excitation events are selected, fine structures associated with the charge of the fragments are observed. Furthermore, there is a sudden increase in Ek for μH > 155, which is probably due to a spherical shell N = 50 in the light fragment and the corresponding deformed (but stable) heavy fragments with masses in the rare earth region. For the average (pre-neutron emission) total fragment kinetic energy, a value of 176.4 ± 0.6 MeV has been obtained, in agreement with the systematics. Also the prompt neutron emission curve v(m*) has been calculated, which shows the well-known saw-tooth shape. Finally, the energy distribution and the emission probability of the ternary α-particles have been determined.
KW - Nuclear reactions
UR - http://www.scopus.com/inward/record.url?scp=0002471093&partnerID=8YFLogxK
U2 - 10.1016/0375-9474(81)90002-6
DO - 10.1016/0375-9474(81)90002-6
M3 - Article
AN - SCOPUS:0002471093
SN - 0375-9474
VL - 369
SP - 1
EP - 14
JO - Nuclear Physics, Section A
JF - Nuclear Physics, Section A
IS - 1
ER -