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How to determine the shape of nuclear molecules with polarized gamma-rays
by Lorenzo Fortunato
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Submission summary
| Authors (as registered SciPost users): | Lorenzo Fortunato |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/1910.04498v1 (pdf) |
| Date submitted: | 2019-10-11 02:00 |
| Submitted by: | Fortunato, Lorenzo |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 24th European Few Body Conference (EFB2019) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
A method has been recently proposed to establish the geometry of the alpha-cluster arrangement in $^{12}$C making use of polarized gamma-rays. The ratio of intensities of scattered radiation at 90 degrees along and perpendicular to the initial direction of the electric field vector, called depolarization ratio, is a key quantity that allows to underpin the nature of totally symmetric modes of vibrations. This allows to connect with the underlying point-group structure and therefore to the geometric shape of the nuclear molecule. This method is reviewed for $^{12}$C and extended to other configurations, such as three unequal clusters and four identical clusters (e.g. $^{16}$O).
Current status:
Reports on this Submission
Report #2 by Anonymous (Referee 1) on 2019-11-14 (Contributed Report)
- Cite as: Anonymous, Report on arXiv:1910.04498v1, delivered 2019-11-14, doi: 10.21468/SciPost.Report.1500
Report
Report on "How to determine the shape of nuclear molecules with polarized gamma-rays" by Lorenzo Fortunato
The investigation of alpha clustering and nuclear molecules in light nuclei has a long history that has been reviewed recently in the "Clusters in Nuclei" Series published as Lecture Notes in Physis 818 (2010), ibidem 848 (2012), ibidem 875 (2014). The geometric shapes of possible alpha-like configurations of 12C has been studied extensively as linear chains, triangular configurations, Bose-Einstein condensates etc ... For instance, algebraic methods were propose by Franco Iachello, Josef Cseh and others to explain existing experimental data. The present contribution of Lorenzo Fortunato entitled "How to determine the shape of nuclear molecules with polarized gamma-rays" that extend a previous publication, proposes a new tool to clearly discriminate among the various geometric configurations for alpha-cluster nuclei by using polarized gamma-rays. One can recall that the group Moshe Gay has already published some data of this kind and that this experimental programme will soon be possible at the forthcoming European ELI-NP facility. The manuscript is well written without any typing error and the discussion is quite convincing. Although the bibliography appears to be adequate, I would suggest to add some more references (review articles, theoretical papers and experimental results) that appeared in the previous paragraph. To conclude, I have no hesitation to recommend the publication of this written contribution in the SciPost Physics Proceedings of the 24th European Few Body Conference that has been held last summer at the University of Surrey, U.K.