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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Editor-in-Chief: Qaim, Syed M.

12 Issues per year

IMPACT FACTOR 2017: 1.202

CiteScore 2017: 1.22

SCImago Journal Rank (SJR) 2017: 0.409
Source Normalized Impact per Paper (SNIP) 2017: 0.869

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Volume 89, Issue 11-12


Excitation energy division in 51V+197Au collisions 75 MeV above the barrier

Ch. Wirtz / Jens Volker Kratz / W. Brüchle / M. Schädel / B. Schausten / N. Wiehl
Published Online: 2009-09-25 | DOI: https://doi.org/10.1524/ract.2001.89.11-12.689

We have previously determined the excitation energy division in 51V+197Au collisions at a bombarding energy corresponding exactly to the Bass-model barrier, Ecm=B, and at Ecm=B+25 MeV. At the barrier, the average excitation energies as a function of Z showed an extreme acceptor-donor asymmetry ("sawtooth" phenomenon) suggesting that the excitation energy division depends on how the neck nucleons are shared at scission. At the 25 MeV higher bombarding energy, a rapid change toward equipartition of the excitation energy was observed. We report here on the determination of the excitation energy division in the same system, using the same experimental technique, at Ecm=B+75 MeV. At this bombarding energy, the average excitation energies indicate that a temperature equilibrium has been reached for most partitions except for the - on the average - incompletely damped events near the entrance channel charges, where some remnant of the "sawtooth" phenomenon is still visible.

About the article

Published Online: 2009-09-25

Published in Print: 2001-11-01

Citation Information: Radiochimica Acta, Volume 89, Issue 11-12, Pages 689–696, ISSN (Online) 2193-3405, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1524/ract.2001.89.11-12.689.

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