Determination of the temperatures of hot nuclei from “first chance” emission spectra

M Gonin, L Cooke, K Hagel, Y Lou, JB Natowitz… - Physics Letters B, 1989 - Elsevier
M Gonin, L Cooke, K Hagel, Y Lou, JB Natowitz, RP Schmitt, B Srivastava, W Turmel…
Physics Letters B, 1989Elsevier
The “first chance” spectra of light charged particles and neutrons emitted from 160Yb
produced in the 60Ni+ 100Mo reaction have been isolated. The same initial temperature for
the different evaporated particles and a decrease of the Coulomb barriers for the charged
particles are observed. The inverse level density parameter K= A/a reaches a value of
13.8±0.7 MeV at ETH≈ 236 MeV, confirming the decrease of the parameter a at excitation
energies above 150 MeV.
The “first chance” spectra of light charged particles and neutrons emitted from 160Yb produced in the 60Ni+100Mo reaction have been isolated. The same initial temperature for the different evaporated particles and a decrease of the Coulomb barriers for the charged particles are observed. The inverse level density parameter K= A/ a reaches a value of 13.8±0.7 MeV at ETH≈236 MeV, confirming the decrease of the parameter a at excitation energies above 150 MeV.
Elsevier
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