sup 14 N(. gamma. ,. pi. sup + ) sup 14 C sub gs at photon energies of 230, 260, and 320 MeV

Journal Article · Thu Feb 01 04:00:00 EST 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.653· OSTI ID:7165515

Ghedira, L; Myers, D; Cottman, B H; Sankhavaram, K; Seneviratne, M D; Stoler, P; Winhold, E J; Yamazaki, M; Yergin, P F ^[1]; Distelbrink, J H.J. ^[2]; Roehrich, K; Schmitt, C; Walther, V H ^[3]; Bernstein, A M; Blomqvist, K I; Nelson, J A ^[4]

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1. Physics Department, Rensselaer Polytechnic Institute, Troy, New York, 12180 (USA)
2. Physics Department, Rensselaer Polytechnic Institute, Troy, New York, 12180 Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (USA)
3. Institut fuer Kernphysik, Johannes Gutenberg Universitaet, D-6500 Mainz, (Federal Republic of Germany)
4. Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (USA)

The pion angular distribution for {sup 14}N({gamma},{pi}{sup +}){sup 14}C{sub g.s.} has been measured at photon energies of 230 and 260 MeV. These data are consistent with the trend of our earlier data at 200 and 320 MeV. Additional forward angle data were obtained at 320 MeV. The results are compared to several calculations based on the distorted-wave impulse approximation and on the delta-hole model. The data are best fit by the calculations of Tiator {ital et} {ital al}. which use the delta-hole model in the resonance channel. These calculations fit the 230 MeV data well and underestimate the 260 and 320 MeV data by about 25%.

• OSTI ID: 7165515
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 41:2; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651320* -- Nuclear Properties & Reactions
A=6-19
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BASIC INTERACTIONS
BOSONS
BREMSSTRAHLUNG
CHERENKOV COUNTERS
DISTORTED WAVE THEORY
DISTRIBUTION
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
HADRONS
IMPULSE APPROXIMATION
INTERACTIONS
MEASURING INSTRUMENTS
MESONS
MEV RANGE
MEV RANGE 100-1000
NITROGEN 14 TARGET
NUCLEAR REACTIONS
PARTICLE PRODUCTION
PHOTONUCLEAR REACTIONS
PHOTOPRODUCTION
PIONS
PIONS PLUS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
RADIATIONS
TARGETS