Clustering effects in 48Cr composite nuclei produced via the 24Mg+24Mg reaction

被引：16

作者：

Di Nitto, A. ^{[1
,2
]}

Vardaci, E. ^{[1
,3
]}

Brondi, A. ^{[1
,3
]}

La Rana, G. ^{[1
,3
]}

Cinausero, M. ^{[4
]}

Gelli, N. ^{[5
]}

Moro, R. ^{[1
,3
]}

Nadtochy, P. N. ^{[1
]}

Prete, G. ^{[4
]}

Vanzanella, A. ^{[1
]}

机构：

[1] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy

[2] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany

[3] Univ Naples Federico II, Dipartimento Fis, Naples, Italy

[4] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Padova, Italy

[5] Ist Nazl Fis Nucl, Sez Firenze, I-50019 Florence, Italy

来源：

PHYSICAL REVIEW C | 2016年 / 93卷 / 04期

关键词：

PARTICLE EVAPORATION; HOT NUCLEI; DECAY; EMISSION; SYSTEM; MODEL; RESONANCES; SCATTERING; FISSION; SHAPES;

D O I：

10.1103/PhysRevC.93.044602

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The nuclear properties of Cr-48 composite alpha-like nuclei produced at 60 MeV of excitation energy via the Mg-24 + 24Mg reaction were investigated. This excitation energy corresponds to a resonance with a narrow width (170 keV) observed in the elastic and inelastic channels, which was interpreted as a highly deformed state. To gain insight on the deformation of this state exclusive measurements of light charged particles were carried out with 8 pi LP apparatus at Laboratori Nazionali di Legnaro and compared to statistical model predictions. The measured of alpha-particle energy spectra, alpha-evaporation residues, alpha-alpha, and alpha-alpha-alpha correlations indicate the limitation of the rotating liquid drop model in describing the nuclear shape of the compound nucleus along the decay cascade. To reproduce the full set of experimental data very elongated nuclear shapes had to be considered, with an axis ratio 3 : 1 at the resonance angular momentum. This large deformation is consistent with previous findings for alpha-like nuclei and with the predictions of the cranked cluster model.

引用

页数：8

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