Antiproton storage materials: Response of neon, argon, and benzene to a negative particle

Journal Article · Thu Mar 01 04:00:00 EST 1990 · Physical Review, A (General Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevA.41.2315· OSTI ID:7163142

Cahill, P A; Anderson, R A; Riley, M E ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185 (US)

The energies of systems composed of a point negative charge (e.g., antiproton, {ital {bar p}}, or negative muon, {mu}{sup {minus}}) and an atom or small molecule (He,Ne,Ar,C{sub 6}H{sub 6}) have been calculated using large-basis-set, correlated {ital ab} {ital initio} electronic-structure methods. By invoking the Born-Oppenheimer approximation, these energies are used to generate potential surfaces for the interaction of a negative particle with an atom or small molecule. The results indicate that the particle-induced polarizations are significant even at 10-bohr separations in neon. Unusual behavior of the dipole moments of both argon and neon was calculated to occur as a function of separation. The molecular-orbital approach used here may also be useful in analyzing recent ionization behavior in low-energy {ital {bar p}}--inert-gas scattering experiments. Furthermore, the calculated large degree of polarization further constrains the design of materials for long-term normal matter storage of antiprotons for advanced energy sources.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7163142
• Journal Information: Physical Review, A (General Physics); (USA), Journal Name: Physical Review, A (General Physics); (USA) Vol. 41:5; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANTIBARYONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEONS
ANTIPARTICLES
ANTIPROTONS
ARGON
AROMATICS
ATOM COLLISIONS
BARYONS
BENZENE
BUFFERS
COLLISIONS
DIPOLE MOMENTS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FLUIDS
FUNCTIONS
GASES
HADRONS
HYDROCARBONS
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
MOLECULE COLLISIONS
NEON
NONMETALS
NUCLEI
NUCLEONS
ORGANIC COMPOUNDS
POLARIZATION
RARE GASES
RESPONSE FUNCTIONS
STORAGE