Adiabatic Quantum Tunneling in Heavy-Ion Sub-barrier Fusion

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.2014· OSTI ID:542288

Hagino, K; Takigawa, N ^[1]; Dasgupta, M; Hinde, D J; Leigh, J R ^[2]

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1. Department of Physics, Tohoku University, Sendai 980-77 (Japan)
2. Department of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australian Capital Territory 0200 (Australia)

The measured fusion barrier distributions for {sup 40}Ca+{sup 192}Os, {sup 194}Pt show significant features due to projectile excitation, while none are seen for {sup 16}O+{sup 144}Sm. This conflict is reconciled using realistic coupled-channel calculations, which show that the higher excitation energy of the 3{sup {minus}} state in {sup 16}O produces an adiabatic potential renormalization, without affecting the structure in the barrier distribution. This result indicates that adiabatic effects restrict, in a natural way, the states which influence the {ital shape} of a fusion barrier distribution. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 542288
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 11 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CALCIUM 40 TARGET
COUPLED CHANNEL THEORY
CROSS SECTIONS
DEFORMATION
EXCITATION
HEAVY ION FUSION REACTIONS
OSMIUM 192 TARGET
PLATINUM 194 TARGET
RENORMALIZATION
SHAPE
TUNNELING