Pion scattering to 6 sup minus stretched states in sup 24 Mg and sup 26 Mg

Journal Article · Sun Dec 01 04:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.2413· OSTI ID:5081676

Lindgren, R A; Clausen, B L ^[1]; Blanpied, G S; Hernandez, J; Mishra, C S; Mize, W K; Whisnant, C S ^[2]; Ritchie, B G ^[3]; Morris, C L; Seestrom-Morris, S J ^[4]; Moore, C F; Seidl, P A ^[5]; Wildenthal, B H ^[6]; Gilman, R ^[7]; Carr, J A ^[8]

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1. Institute of Nuclear and Particle Physics and Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)
2. University of South Carolina, Columbia, South Carolina 29208 (United States)
3. Arizona State University, Tempe, Arizona 85287 (United States)
4. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
5. University of Texas, Austin, Texas 78712 (United States)
6. University of New Mexico, Albuquerque, New Mexico 87131 (United States)
7. University of Pennsylvania, Philadelpha, Pennsylvania 19104 (United States)
8. Supercomputer Computations Research Institute, The Florida State University, Tallahassee, Florida 32306 (United States)

Inelastic {pi}{sup {plus minus}} cross-section measurements at pion incident energies of 150 and 180 MeV were made on 6{sup {minus}} states in {sup 24,26}Mg. In particular, we have determined the ({ital f}{sub 7/2}{ital d5/2}{sup {minus}1}){sub 6}{sup {minus}} isoscalar {ital Z}{sub 0}=0.21{plus minus}0.02 strength for the strongest {ital T}=0, {ital J} {sup {pi}}=6{sup {minus}} state located at 12.11{plus minus}0.05 MeV in {sup 24}Mg, and the isoscalar {ital Z}{sub 0}=0.17{plus minus}0.04 and isovector {ital Z}{sub 1}=0.21{plus minus}0.02 strength for the strongest {ital T}=1, {ital J} {sup {pi}}=6{sup {minus}} state located at 9.18 MeV in {sup 26}Mg. The distorted-wave impulse-approximation pion cross-section calculations required a multiplicative normalization factor of 1.2{plus minus}0.1 in order to reproduce the pure isovector strength deduced from electron scattering for the well-known {ital T}=1, {sup {pi}}=6{sup {minus}} state at 15.15 MeV in {sup 24}Mg and the {ital T}=2, {ital J} {sup {pi}}=6{sup {minus}} state at 18.05 MeV in {sup 26}Mg.

• OSTI ID: 5081676
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 44:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663530 -- Nuclear Mass Ranges-- A=20-38-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
HADRON REACTIONS
INELASTIC SCATTERING
MAGNESIUM 24 TARGET
MAGNESIUM 26 TARGET
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
MULTIPOLE TRANSITIONS
NUCLEAR REACTIONS
OSCILLATOR STRENGTHS
PION REACTIONS
SCATTERING
TARGETS