Electroexcitation of negative-parity states in sup 18 O

Journal Article · Wed May 01 04:00:00 EDT 1991 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.43.2147· OSTI ID:5663493

Manley, D M ^[1]; Berman, B L ^[2]; Bertozzi, W; Buti, T N; Finn, J M; Hersman, F W; Hyde-Wright, C E; Hynes, M V; Kelly, J J; Kovash, M A; Kowalski, S; Lourie, R W; Murdock, B; Norum, B E; Pugh, B; Sargent, C P ^[3]; Millener, D J ^[4]

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1. Department of Physics and Center for Nuclear Research, Kent State University, Kent, Ohio 44242 (USA)
2. Department of Physics, The George Washington University, Washington, D.C. 20052 (USA)
3. Department of Physics and Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (USA)
4. Brookhaven National Laboratory, Upton, New York 11973 (USA)

Form-factor measurements in the momentum-transfer range 0.6{le}{ital q}{le}2.7 fm{sup {minus}1} are presented for the 1{sup {minus}} levels in {sup 18}O at 4.46, 6.20, 7.62, and 8.04 MeV, the 3{sup {minus}} levels at 5.10, 6.40, and 8.29 MeV, and the 5{sup {minus}} levels at 7.86 and 8.13 MeV. These are the first measurements of the 5{sup {minus}} states by inelastic scattering and the first electron-scattering measurements of the higher 1{sup {minus}} and 3{sup {minus}} states. A Rosenbluth separation of the longitudinal and transverse form factors was performed by fitting the data with a phenomenological polynomial-times-Gaussian parametrization motivated by the form of theoretical form factors when harmonic-oscillator wave functions are used. Comparisons are made with structure models. The Coulomb form factors of several levels indicate the significance of small admixtures of 3{h bar}{omega} components in the negative-parity wave functions.

• DOE Contract Number: AC02-76ER03069; AC02-76CH00016; FG05-86ER40285
• OSTI ID: 5663493
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 43:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELECTRON REACTIONS
ELECTRONIC EQUIPMENT
ENERGY RANGE
EQUIPMENT
EXPERIMENTAL DATA
FORM FACTORS
FUNCTIONS
HARMONIC OSCILLATORS
INELASTIC SCATTERING
INFORMATION
LEPTON REACTIONS
MEV RANGE
MEV RANGE 01-10
NUCLEAR REACTIONS
NUMERICAL DATA
OSCILLATORS
OXYGEN 18 TARGET
PARTICLE PROPERTIES
SCATTERING
TARGETS
WAVE FUNCTIONS