Ab Initio Calculations Of LightIon Reactions
Abstract
The exact treatment of nuclei starting from the constituent nucleons and the fundamental interactions among them has been a longstanding goal in nuclear physics. In addition to the complex nature of nuclear forces, one faces the quantummechanical manynucleon problem governed by an interplay between bound and continuum states. In recent years, significant progress has been made in ab initio nuclear structure and reaction calculations based on input from QCD employing Hamiltonians constructed within chiral effective field theory. In this contribution, we present one of such promising techniques capable of describing simultaneously both bound and scattering states in light nuclei. By combining the resonatinggroup method (RGM) with the ab initio nocore shell model (NCSM), we complement a microscopic cluster approach with the use of realistic interactions and a microscopic and consistent description of the clusters. We discuss applications to light nuclei scattering, radiative capture and fusion reactions.
 Authors:
 Publication Date:
 Research Org.:
 Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1037853
 Report Number(s):
 LLNLPROC537597
TRN: US1201708
 DOE Contract Number:
 W7405ENG48
 Resource Type:
 Conference
 Resource Relation:
 Conference: Presented at: Frontier Issues in Physics of Exotic Nuclei (YKIS2011), Kyoto, Japan, Oct 10  Oct 15, 2011
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CAPTURE; HAMILTONIANS; LIGHT NUCLEI; NUCLEAR FORCES; NUCLEAR PHYSICS; NUCLEAR STRUCTURE; NUCLEI; NUCLEONS; PHYSICS; QUANTUM CHROMODYNAMICS; RESONATINGGROUP METHOD; SCATTERING; SHELL MODELS
Citation Formats
Navratil, P, Quaglioni, S, Roth, R, and Horiuchi, W. Ab Initio Calculations Of LightIon Reactions. United States: N. p., 2012.
Web.
Navratil, P, Quaglioni, S, Roth, R, & Horiuchi, W. Ab Initio Calculations Of LightIon Reactions. United States.
Navratil, P, Quaglioni, S, Roth, R, and Horiuchi, W. 2012.
"Ab Initio Calculations Of LightIon Reactions". United States.
doi:. https://www.osti.gov/servlets/purl/1037853.
@article{osti_1037853,
title = {Ab Initio Calculations Of LightIon Reactions},
author = {Navratil, P and Quaglioni, S and Roth, R and Horiuchi, W},
abstractNote = {The exact treatment of nuclei starting from the constituent nucleons and the fundamental interactions among them has been a longstanding goal in nuclear physics. In addition to the complex nature of nuclear forces, one faces the quantummechanical manynucleon problem governed by an interplay between bound and continuum states. In recent years, significant progress has been made in ab initio nuclear structure and reaction calculations based on input from QCD employing Hamiltonians constructed within chiral effective field theory. In this contribution, we present one of such promising techniques capable of describing simultaneously both bound and scattering states in light nuclei. By combining the resonatinggroup method (RGM) with the ab initio nocore shell model (NCSM), we complement a microscopic cluster approach with the use of realistic interactions and a microscopic and consistent description of the clusters. We discuss applications to light nuclei scattering, radiative capture and fusion reactions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2012,
month = 3
}

Ab initio potential surface calculations for the H + H/sub 2/O and H + HF hydrogen atom exchange reactions
The calculations reveal that the H + H/sub 2/O and H + HF exchange reactions are both characterized by a large energy barrier (on the order of 20 to 30 kcal/mole) and a transition state possessing significant Rydberg 3s character on the central atom. The presence of high energy barriers means that both exchange reactions will be extremely slow except at very high temperatures. 