Possible hyperdeformed band in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Ar</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>36</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>observed in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:mmultiscripts><mml:mrow><m

Sciani, W.; Otani, Yoshimi; Lépine‐Szily, A.; Benjamim, E. A.; Chamon, L. C.; Lichtenthäler, R.; Darai, J.; Cseh, J.

doi:10.1103/physrevc.80.034319

Cited by 36 publications

(11 citation statements)

References 47 publications

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“…For such systems, the moment of inertia can be considered of a two-body freely rotating about an axis perpendicular to the symmetry axis rather than being a one-body rigid rotor. The moment of inertia of these molecular states has been found to be ∼ 1.5 times larger compared to the super deformed states [34]. As a result, the angular frequency in this case would be much smaller reducing the effect of Coriolis splitting for a given J.…”

Section: Resultsmentioning

confidence: 86%

Signature of clustering in quantum many-body systems probed by the giant dipole resonance

et al. 2017

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The present experimental study illustrates how large deformations attained by nuclei due to cluster formation are perceived through the giant dipole resonance (GDR) strength function. The high energy GDR γ-rays have been measured from 32 S at different angular momenta (J) but similar temperatures in the reactions 4 He(E lab =45MeV) + 28 Si and 20 Ne(E lab =145MeV) + 12 C. The experimental data at lower J (∼ 10h) suggests a normal deformation, similar to the ground state value, showing no potential signature of clustering. However, it is found that the GDR lineshape is fragmented into two prominent peaks at high J (∼ 20h) providing a direct measurement of the large deformation developed in the nucleus. The observed lineshape is also completely different from the ones seen for Jacobi shape transition at high J pointing towards the formation of cluster structure in super-deformed states of 32 S at such high spin. Thus, the GDR can be regarded as a unique tool to study cluster formation at high excitation energies and angular momenta.

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Section: Resultsmentioning

confidence: 86%

Signature of clustering in quantum many-body systems probed by the giant dipole resonance

et al. 2017

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“…Furthermore, the structure of possible octupoleunstable 3:1 nuclear shapes -hyperdeformation with β 2 ≈ 1.0 -has also been discussed for actinide nuclei [86] 36 Ar. Excitation energies of the ground state (spherical shape) and SD (ellipsoidal shape) bands [97], respectively, and the energies of HD (dinuclear shape) band from the quasimolecular resonances observed in the 12 C+ 24 Mg (open rectangles) [98,115,116,117] and 16 O+ 20 Ne (full rectangles) [118,119] reactions are plotted as a function of J(J+1). This figure has been adapted from Refs.…”

Section: Alpha Clustering Nuclear Molecules and Large Deformationsmentioning

confidence: 99%

Clustering in Stable and Exotic Light Nuclei

Beck¹

2017

Nuclear Particle Correlations and Cluster Physics

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Since the pioneering discovery of molecular resonances in the 12 C+ 12 C reaction more than half a century ago a great deal of research work has been undertaken in alpha clustering. Our knowledge on physics of nuclear molecules has increased considerably and nuclear clustering remains one of the most fruitful domains of nuclear physics, facing some of the greatest challenges and opportunities in the years ahead. The occurrence of "exotic" shapes and Bose-Einstein alpha condensates in light N =Z alpha-conjugate nuclei is investigated. Various approaches of the superdeformed and hyperdeformed bands associated with quasimolecular resonant structures are presented. Evolution of clustering from stability to the drip-lines is examined: clustering aspects are, in particular, discussed for light exotic nuclei with large neutron excess such as neutron-rich Oxygen isotopes with their complete spectroscopy. * Review

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“…Furthermore, the structure of possible octupole-unstable 3:1 nuclear shapes (hyperdeformation (HD) with β 2 ≈ 1.0) has also been discussed for actinide nuclei in terms of clustering phenomena [8]. Typical examples for the link between quasimolecular bands and extremely deformed (SD/HD) shapes can be found in the literature for A = 20 − 60 α-conjugate N =Z nuclei [8,18,36,52,54,55,56,57,58,59,60,61,62,63,64,65,66,67]. Highly deformed shapes and SD rotational bands have been discovered in several light α-like nuclei, such as 36 Ar and 40 Ca by using γ-ray spectroscopy techniques [57,59].…”

Section: Alpha Clustering Deformations and α Condensates In Heavier mentioning

confidence: 99%

Recent Experimental Results on Nuclear Cluster Physics

Beck

2017

J. Phys.: Conf. Ser.

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Knowledge on nuclear cluster physics has increased considerably since the pioneering discovery of 12 C+ 12 C resonances half a century ago and nuclear clustering remains one of the most fruitful domains of nuclear physics, facing some of the greatest challenges and opportunities in the years ahead. The occurrence of "exotic" shapes and/or Bose-Einstein α condensates in light N =Z α-conjugate nuclei is investigated. Evolution of clustering from stability to the drip-lines examined with clustering aspects persisting in light neutron-rich nuclei is consistent with the extension of the "Ikedadiagram" to non α-conjugate nuclei.

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Possible hyperdeformed band inAr36observed inC12

Cited by 36 publications

References 47 publications

Signature of clustering in quantum many-body systems probed by the giant dipole resonance

Signature of clustering in quantum many-body systems probed by the giant dipole resonance

Clustering in Stable and Exotic Light Nuclei

Recent Experimental Results on Nuclear Cluster Physics

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