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Wuosmaa, A. H.; Back, B. B.; Betts, R. R.; Freer, M.; Glagola, B. G.; Henderson, D. J.; Hofman, D. J.; Nanal, V.

doi:10.1103/physrevc.54.2463

Cited by 9 publications

(6 citation statements)

References 24 publications

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“…In the Brink-Bloch model, both the ground state and the 3 − 1 state have the same intrinsic triangular shape, and the 3 − 1 state has three units of angular momentum around its three-fold symmetry axis. The new mutual 3 − 1 data complement earlier measurements of the mutual 0 + 2 (7.65 J=3 L MeV) channel [72] and the 0 + 2 3 − 1 channel [73,74] and extend over the energy range E cm = 30-45 MeV.…”

Section: Breakup Ofsupporting

confidence: 78%

Clustering in Nuclei from N/Z=1 to N/Z=2

Catford

2000

The Nucleus

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The clustering of nucleons in nuclei is a widespread but elusive phenomenon for study. Here, we wish to highlight the variety of theoretical approaches, and demonstrate how they are mutually supportive and complementary. On the experimental side, we describe recent advances in the study of the classic cluster nucleus 24 Mg. Also, recent studies of clustering in nuclei approaching the neutron drip line are described. In the region near N/Z=2, both theory and experiment now suggest that multi-centre cluster structure is important, in particular for the very neutron rich beryllium isotopes.

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Section: Breakup Ofsupporting

confidence: 78%

Clustering in Nuclei from N/Z=1 to N/Z=2

Catford

2000

The Nucleus

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“…Spin alignment is found in a diverse number of reactions including inelastic scattering [1][2][3][4][5][6], deep elastic scatter ing [7][8][9][10], projectile fragmentation [11][12][13][14][15][16][17][18], fission [19,20], Coulomb excitation [21], and other direct reactions [22][23][24][25][26][27][28], For peripheral reactions, the dominant angular momentum in the reaction is the initial orbital angular momentum between the projectile and target, which is perpendicular to both the beam axis and the reaction plane. It is therefore not surprising that many fragments have their spin aligned, on av erage, parallel to this direction [7,11,12,[21][22][23]27], However, there are some cases where different alignments are found [13][14][15][16]18], Measurement of a fragment's spin alignment can be deduced from its decay products, including fi particles though NMR techniques [11,12], from the recoil induced by y-ray decay [23,2...…”

Section: Introductionmentioning

confidence: 99%

Spin alignment of excited projectiles due to target spin-flip interactions

et al. 2015

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The sequential breakup of E /A = 65.5-MeV 7Be and E /A = 36.6-MeV 6Li projectiles excited through inelastic interactions with 9Be target nuclei has been studied. For events where the target nucleus remained in its ground state, significant alignment of the excited projectile's spin axis parallel or antiparallel to the beam direction was observed. This unusual spin alignment was found to be largely independent of the projectile's scattering angle and it was deduced that the target nucleus has a significant probability of changing its spin orientation during the interaction. It is proposed that the unusual spin alignment is a consequence of the molecular structure of the 9 Be nucleus.

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“…Data have been obtained at several energies between E c:m: =23 to 37 MeV [10]. The manner in which we isolate the 3 , +g.s.…”

Section: -Experimentsmentioning

confidence: 99%

Spin assignments for quasi-molecular resonances from angular correlation techniques

Wuosmaa

1997

Nuov Cim A

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-IntroductionThe study of resonances in the scattering of 12 C+ 12 C attracted a great deal of attention some years ago, with the association of peaks in the excitation functions for scattering and transfer reactions in this system with quasi-molecular structures in the composite nucleus 24 Mg [1,2]. Resonances in this system have been linked to extended, deformed cluster configurations in 24 Mg at high excitation energy [3], but reaction models are often able to reproduce at least the qualitative features of the data (e.g., [4]). Progress in the understanding of the nature of resonances in this and other systems has, however, often been hampered by the lack of precise experimental information. In many cases, resonances in the 12 C+ 12 C system appear in inelastic reaction channels where the channel spin is non-zero. The usual method of measuring inclusive scattering angular distributions thus becomes insensitive to the resonance spin due to the complications arising from the spin of the excited scattered heavy ion. As a result, few rigorous spin assignments have been available for resonances in inelastic scattering channels with non-zero channel spin. Some progress was made by resorting to particle-gamma-ray angular correlation measurements [5][6][7], however definitive measurements are complicated and, without a 4-gamma-detector apparatus, the results are often model dependent and difficult to interpret.

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Resonance spin assignments inC12+12

Cited by 9 publications

References 24 publications

Clustering in Nuclei from N/Z=1 to N/Z=2

Clustering in Nuclei from N/Z=1 to N/Z=2

Spin alignment of excited projectiles due to target spin-flip interactions

Spin assignments for quasi-molecular resonances from angular correlation techniques

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