Microscopic two-nucleon overlaps and knockout reactions from 12C

Simpson, E. C.; Navrátil, P.; Roth, R.; Tostevin, J. A.

doi:10.1103/physrevc.86.054609

Microscopic two-nucleon overlaps and knockout reactions from $^{12}$ C

Journal Article · Thu Nov 29 00:00:00 EST 2012 · Physical Review. C. Nuclear Physics

DOI:https://doi.org/10.1103/physrevc.86.054609· OSTI ID:1565054

Simpson, E. C. ^[1]; Navrátil, P. ^[2]; Roth, R. ^[3]; Tostevin, J. A. ^[4]

Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
TRIUMF, Vancouver, BC (Canada)
Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik
Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics; Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.

The nuclear structure dependence of direct reactions that remove a pair of like or unlike nucleons from a fast ¹²C projectile beam are considered. Specifically, we study the differences in the two-nucleon correlations present and the predicted removal cross sections when using $$p$$-shell shell-model and multi- $ℏω$ no-core shell-model (NCSM) descriptions of the two-nucleon overlaps for the transitions to the mass $A=10$ projectile residues. The NCSM calculations use modern chiral two-nucleon and three-nucleon (NN+3N) interactions. The $np$-removal cross sections to low-lying $T=0$, ¹⁰B final states are enhanced when using the NCSM two-nucleon amplitudes. The calculated absolute and relative partial cross sections to the low-energy ¹⁰B final states show a significant sensitivity to the interactions used, suggesting that assessments of the overlap functions for these transitions and confirmations of their structure could be made using final-state-exclusive measurements of the $np$-removal cross sections and the associated momentum distributions of the forward traveling projectile-like residues.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)

Sponsoring Organization:: USDOE Office of Science (SC)

OSTI ID:: 1565054

Journal Information:: Physical Review. C. Nuclear Physics, Journal Name: Physical Review. C. Nuclear Physics Journal Issue: 5 Vol. 86; ISSN 0556-2813; ISSN PRVCAN

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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