[sup 27]Al([ital d],[sup 3]He)[sup 26]Mg reaction at 29 MeV
- Institut de Physique Nucleaire, Boite Postale No. 1, 91406 Orsay Cedex (France)
- Department of Physics and Astronomy, University of New Mexico, 800 Yale NE, Albuquerque, New Mexico 87131 (United States)
The [sup 27]Al([ital d],[sup 3]He)[sup 26]Mg reaction has been investigated at 29 MeV incident energy. Observations using a split-pole magnetic spectrograph have been made of 65 levels of [sup 26]Mg in the range of excitation energy between 0 and 9.7 MeV. These levels can be identified with the known states of [sup 26]Mg, which by other techniques have been assigned excitation energies with precisions of 3 keV or better. Information about the orbital angular momentum (with associated conclusions about [ital J] and [pi]) and the single-nucleon spectroscopic factors of about 40 of these [sup 26]Mg levels have been obtained through distorted-wave Born approximation (DWBA) analyses of measured angular distributions. Eight levels which are populated through the pickup of a [ital l][sub [ital p]]=1 proton have been observed at [ital E][sub [ital x]]=6.878, 7.694, 7.824, 8.050, 8.902, 9.042, 9.239, and 9.618 MeV. The two most strongly excited of these levels ([ital E][sub [ital x]]=7.824 and 9.042 MeV) were attributed in a previous study of the same reaction to the population of 1[ital p] hole states. The observed angular distributions of two [ital J][sup [pi]]=6[sup +] levels are reproduced with [ital l][sub [ital p]]=4 DWBA calculations which assume [ital g] components in the ground state of [sup 27]Al. The excitation energies and spectroscopic factors for positive parity states are compared with the results of a recent, complete [ital sd]-shell space, shell-model calculation. New spectroscopic information is extracted from this comparison and from the comparison of the present results with previous knowledge.
- OSTI ID:
- 6330115
- Journal Information:
- Physical Review, C (Nuclear Physics); (United States), Vol. 48:1; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINIUM 27 TARGET
DEUTERON REACTIONS
MAGNESIUM 26
ENERGY LEVELS
ANGULAR DISTRIBUTION
DWBA
HELIUM 3
MEV RANGE 10-100
PARITY
SHELL MODELS
SPECTROSCOPIC FACTORS
SPIN
TRANSFER REACTIONS
ALKALINE EARTH ISOTOPES
ANGULAR MOMENTUM
BORN APPROXIMATION
CHARGED-PARTICLE REACTIONS
DIRECT REACTIONS
DISTRIBUTION
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MAGNESIUM ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PARTICLE PROPERTIES
STABLE ISOTOPES
TARGETS
663110* - General & Average Properties of Nuclei & Nuclear Energy Levels- (1992-)
663440 - D-
T-
& He-induced Reactions & Scattering- (1992-)
663530 - Nuclear Mass Ranges- A=20-38- (1992-)