Unexpected character of the heavy-ion fusion excitation function and the compound channel effect

Jiang, C. L.; Henning, W. F.; Hoffman, C. R.; Kay, B. P.; Watwood, N.

doi:10.1103/physrevc.108.l051605

Title: Unexpected character of the heavy-ion fusion excitation function and the compound channel effect

Journal Article · 16 November 2023 · Physical Review. C

DOI: https://doi.org/10.1103/physrevc.108.l051605 · OSTI ID:2356812

Jiang, C. L. ^[1]; Henning, W. F. ^[1];

^[1];

^[1]; Watwood, N. ^[1]

Argonne National Laboratory (ANL), Argonne, IL (United States)

An unexpected overlapping behavior has been observed for fusion excitation functions σ(E) from different entrance channels that fuse to the same compound nucleus in energies above the barrier. Here, the overlap appears when the center of mass energy of each excitation function is multiplied by a constant scaling factor. The scaling factors are determined by adjusting and are nearby the ratios of corresponding Coulomb barriers of each entrance channel. Moreover, the corresponding d(σE)/dE spectra also overlap well in this energy range, including their fine structures. The reasoning behind these behaviors are unknown. One possibility is the compound-channel effect, since the overlap behavior does not occur between collision systems leading to different compound nuclei.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 2356812

Alternate ID(s):: OSTI ID: 2228384

Journal Information:: Physical Review. C, Vol. 108, Issue 5; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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