The neutron decay of the resonance in the 12C + 16O system at Ec.m. = 19.7 MeV

Sperr, P.; Evers, D.; Harasim, A.; Assmann, W.; Konrad, P.; Rudolph, K.; Denhoeffer, G.; Ley, Ch.

doi:10.1016/0370-2693(75)90262-2

Cited by 21 publications

(6 citation statements)

References 8 publications

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“…Spins in zssi from [9][10][11][12]; angular momenta of nucleons deduced from spins in eTA1 as determined in the present work. The 1, are consistent with values of [7]. Energy levels in 27Si from [7,18] of the two exci- …”

Section: Classification Of the High-spin States In 27alsupporting

confidence: 83%

“…The population of the state at E x= 17.35 MeV shows a maximum at Ecm=19.85 MeV. This structure is correlated to the one observed in the neutron channel [7,8] and in the SBe channel [12] as mentioned in the introduction. A relatively broad structure appears at Eom=23.10 MeV in the excitation of the 18.54 MeV state.…”

Section: Experimental Procedures and Resultssupporting

confidence: 51%

“…However, they do not show up in the particle decay channels. A resonant structure has been observed close to the 14 + resonance at Ecru= 19.9 MeV in the neutron channel to a 27Si state at 15.77 MeV by Sperr et al [7] and in the reaction 12C(160, 8Be)Z~ (g.s.) by James et al [12].…”

Section: Introductionmentioning

confidence: 90%

“…They emphasized the usefulness of (heavy ion, p) reactions in locating high-spin states near the yrast line. Subsequently the drastic enhancement of the cross section at certain 'resonant' incident energies has been demonstrated by the study of excitation functions for the proton channel [6,3] and for the neutron channel [7,8] (and other channels) of the 12C + 160 reaction. In the well studied resonance at Ecm= 19.7 MeV the elastic and several inelastic channels also resonate.…”

Section: Introductionmentioning

confidence: 99%

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Properties of unbound high-spin states in27Al

et al. 1984

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Selectively excited high-spin states in 27A1 have been located by the reaction 12C(160,p)ZVA1. The excitation functions of these states have been measured at incident energies Ecm = 18.7 to 30.1 MeV at intervals of 150keV. They exhibit maxima of presumably non-statistical origin. At four different energies the subsequent decay of the 27A1 states has been studied by detecting the final heavy recoils with the Munich recoil spectrometer in coincidence with the proton emitted in the first stage of the reaction. Using this new method branching ratios of the 7-, ~-, and n-decay have been measured. Based on angular correlation arguments spins up to 27/2 h have been determined within the experimental accuracy of 1-2 h. The observations suggest a superdeformed shape of 27A1 at least in some of the states.

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Section: Classification Of the High-spin States In 27alsupporting

confidence: 83%

Section: Experimental Procedures and Resultssupporting

confidence: 51%

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Properties of unbound high-spin states in27Al

et al. 1984

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“…For the "Ne(g.s. ) data this oscillatory angular behavior is very apparent, especially at the resonances near 19. 9 and 20.9 MeV.…”

Section: Introductionmentioning

confidence: 91%

Energies andJπvalues of resonances inC12
James¹,
Fletcher
²

1979
Phys. Rev. C
13
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0
0
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The "C(' 0, 'Be)' Ne~reactions to the low lying 0+, 2+, 4" and 3, 1 states have been studied for E, = 18.5 to 22.7 MeV at intervals of -86 keV. Excitation functions indicate the presence of twelve resonances in this energy region, eight of which are given J assignments based on angular distributions of the Be + Ne(0~) channel measured at each energy interval. A high degree of resonance energy correspondence between these and other reaction cross section anomalies is noted. It is apparent that the density of resonant states for the Be + ' Ne exit channel is much higher than reported in other channels.NUCLEAR REACTIONS C( 0, Be) Ne*; Ec m 8.5 to 22.7 MeV, Oc m to 73'; measured 0(6, E) to low lying states, deduced resonance energies and J» values.

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