DAMPING OF UNBOUND SINGLE-PARTICLE MODES

S FORTIER; D BEAUMEL; S GALES; J GUILLOT; H LANGEVINJOLIOT; H LAURENT; JM MAISON; J BORDEWIJK; S BRANDENBURG; A KRASZNAHORKAY; GM CRAWLEY; CP MASSOLO; M RENTERIA; A KHENDRICHE

DAMPING OF UNBOUND SINGLE-PARTICLE MODES

S FORTIER^*, D BEAUMEL, S GALES, J GUILLOT, H LANGEVINJOLIOT, H LAURENT, JM MAISON, J BORDEWIJK, S BRANDENBURG, A KRASZNAHORKAY, GM CRAWLEY, CP MASSOLO, M RENTERIA, A KHENDRICHE

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

The (alpha, He-3-n) reaction has been investigated at 120 MeV incident energy on Ni-64, Zr-90, and Sn-120 target nuclei. Neutrons in coincidence with He-3 particles emitted at 0 degrees were detected using the multidetector array EDEN, in order to get information about the decay of the single-particle states embedded in the (alpha, He-3) continuum. Neutron; angular correlations, multiplicity values, and branching ratios to low-lying states of final nuclei have been compared with the predictions of the statistical decay model. Evidence for a significant nonstatistical decay branch has been observed in the three nuclei below about 15 MeV excitation energy. Direct branching ratios in Zr-91 deduced from this analysis are compared with the predictions of two nuclear structure models. At higher excitation energy, the decay characteristics of the (alpha, He-3) continuum are shown to be mainly statistical.

Original language	English
Pages (from-to)	2401-2414
Number of pages	14
Journal	Physical Review C
Volume	52
Issue number	5
Publication status	Published - Nov-1995

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@article{8d95992e9dc84215b8a2a77badddeb94,

title = "DAMPING OF UNBOUND SINGLE-PARTICLE MODES",

abstract = "The (alpha, He-3-n) reaction has been investigated at 120 MeV incident energy on Ni-64, Zr-90, and Sn-120 target nuclei. Neutrons in coincidence with He-3 particles emitted at 0 degrees were detected using the multidetector array EDEN, in order to get information about the decay of the single-particle states embedded in the (alpha, He-3) continuum. Neutron; angular correlations, multiplicity values, and branching ratios to low-lying states of final nuclei have been compared with the predictions of the statistical decay model. Evidence for a significant nonstatistical decay branch has been observed in the three nuclei below about 15 MeV excitation energy. Direct branching ratios in Zr-91 deduced from this analysis are compared with the predictions of two nuclear structure models. At higher excitation energy, the decay characteristics of the (alpha, He-3) continuum are shown to be mainly statistical.",

keywords = "BREAKUP",

author = "S FORTIER and D BEAUMEL and S GALES and J GUILLOT and H LANGEVINJOLIOT and H LAURENT and JM MAISON and J BORDEWIJK and S BRANDENBURG and A KRASZNAHORKAY and GM CRAWLEY and CP MASSOLO and M RENTERIA and A KHENDRICHE",

year = "1995",

month = nov,

language = "English",

volume = "52",

pages = "2401--2414",

journal = "Physical Review C",

issn = "0556-2813",

publisher = "AMER PHYSICAL SOC",

number = "5",

}

TY - JOUR

T1 - DAMPING OF UNBOUND SINGLE-PARTICLE MODES

AU - FORTIER, S

AU - BEAUMEL, D

AU - GALES, S

AU - GUILLOT, J

AU - LANGEVINJOLIOT, H

AU - LAURENT, H

AU - MAISON, JM

AU - BORDEWIJK, J

AU - BRANDENBURG, S

AU - KRASZNAHORKAY, A

AU - CRAWLEY, GM

AU - MASSOLO, CP

AU - RENTERIA, M

AU - KHENDRICHE, A

PY - 1995/11

Y1 - 1995/11

N2 - The (alpha, He-3-n) reaction has been investigated at 120 MeV incident energy on Ni-64, Zr-90, and Sn-120 target nuclei. Neutrons in coincidence with He-3 particles emitted at 0 degrees were detected using the multidetector array EDEN, in order to get information about the decay of the single-particle states embedded in the (alpha, He-3) continuum. Neutron; angular correlations, multiplicity values, and branching ratios to low-lying states of final nuclei have been compared with the predictions of the statistical decay model. Evidence for a significant nonstatistical decay branch has been observed in the three nuclei below about 15 MeV excitation energy. Direct branching ratios in Zr-91 deduced from this analysis are compared with the predictions of two nuclear structure models. At higher excitation energy, the decay characteristics of the (alpha, He-3) continuum are shown to be mainly statistical.

AB - The (alpha, He-3-n) reaction has been investigated at 120 MeV incident energy on Ni-64, Zr-90, and Sn-120 target nuclei. Neutrons in coincidence with He-3 particles emitted at 0 degrees were detected using the multidetector array EDEN, in order to get information about the decay of the single-particle states embedded in the (alpha, He-3) continuum. Neutron; angular correlations, multiplicity values, and branching ratios to low-lying states of final nuclei have been compared with the predictions of the statistical decay model. Evidence for a significant nonstatistical decay branch has been observed in the three nuclei below about 15 MeV excitation energy. Direct branching ratios in Zr-91 deduced from this analysis are compared with the predictions of two nuclear structure models. At higher excitation energy, the decay characteristics of the (alpha, He-3) continuum are shown to be mainly statistical.

KW - BREAKUP

M3 - Article

SN - 0556-2813

VL - 52

SP - 2401

EP - 2414

JO - Physical Review C

JF - Physical Review C

IS - 5

ER -

DAMPING OF UNBOUND SINGLE-PARTICLE MODES

Abstract

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