Database of Nucleon-Nucleon Scattering Cross Sections by Stochastic Simulation

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$54,485.00
Award Year:
2005
Program:
SBIR
Phase:
Phase I
Contract:
NNL05AB03P
Award Id:
74217
Agency Tracking Number:
040410
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
6701 Democracy Boulevard, Suite 300, Bethesda, MD, 20817
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
133239751
Principal Investigator:
Sarah John
Principal Investigator
(301) 214-9076
sarah.john@eastresearch.com
Business Contact:
Sarah John
Business Official
(301) 214-9076
sarah.john@eastresearch.com
Research Institute:
n/a
Abstract
A database of nucleon-nucleon elastic differential and total cross sections will be generated by stochastic simulation of the quantum Liouville equation in the Wigner representation, incorporating innovations of: (1) antisymmetrization effects of spin ? nucleons in phase space; (2) the first order quantum corrections as a stochastic process for two-nucleon dynamics; and (3) a linked list algorithm to streamline and speed computing. Phase I will produce a prototype 4-dimensional phase space simulation of one dimensional spatial scattering, which will be extended in Phase II to three dimensional spatial scattering with a full 12-dimensional phase space model. Significance includes design of radiation shielding materials for manned NASA missions into deep space, where galactic cosmic rays pose a serious health hazard. Computer codes simulating nuclear transport through materials, with associated input databases of interaction cross sections, enable radiation risk assessment of shielding materials. The proposed database of nucleon cross sections forms a subset of the input database. The simulation may potentially be extended to generate databases for nuclear elastic, inelastic, and fragmentation cross sections. Commercial applications include radiation protection for humans on earth under hazardous conditions. The simulation also has applications to nanotechnology and quantum information technologies.

* information listed above is at the time of submission.

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