Two-particle transfer processes as a signature of shape phase transition in Zirconium isotopes

Lay, J. A.; Vitturi, A.; Fortunato, L.; Tsunoda, Y.; Togashi, Tomoaki; Otsuka, T.

doi:10.48550/arxiv.1905.12976

Cited by 2 publications

(2 citation statements)

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“…One may expect a similar effect as induced by the competition between pairing and deformation in two-nucleon transfer reactions (see, e.g., Ref. [30]). Our derivation can be extended to other decay processes including proton decay.…”

Section: F(pdu)mentioning

confidence: 76%

The single-particle unit for alpha decay

Qi,

Liotta,

Wyss

2020

Preprint

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A salient feature of quantum mechanics is the inherent property of collective quantum motion, when apparent independent quasiparticles move in highly correlated trajectories, resulting in strongly enhanced transition probabilities. To assess the extend of a collective quantity requires an appropriate definition of the uncorrelated average motion, often expressed by single particle units. A well known example in nuclear physics is the Weisskopf unit for electromagnetic transitions which reveals different aspects of collective motion. In this paper we define the corresponding single particle unit for alpha decay following Weisskopf's derivations. We evaluate the alpha decay amplitude as induced by four uncorrelated/non-interacting protons and neutrons and compare it with the one extracted from observed decay rates. Our definition elucidates the collectivity in alpha decay and facilitates an unified description of all alpha decay processes along the nuclear chart. Our formalism is also applicable to other particle decay processes.

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Section: F(pdu)mentioning

confidence: 76%

The single-particle unit for alpha decay

Qi,

Liotta,

Wyss

2020

Preprint

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“…At present, some of us, in collaboration with A. Vitturi, are currently investigating two-neutron transfer processes as a tool to distinguish between standard shapephase transitions (i.e. first or second order phase transitions occuring in systems as a function of a certain control parameter) and situations where the phase transition is driven by shape coexistence [103,104].…”

Section: Two-neutron Transfer Mechanismmentioning

confidence: 99%

An overview of the scientific contribution of Andrea Vitturi to nuclear physics

et al. 2020

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We give an account of the main achievements of the scientific career of Andrea Vitturi so far, that have recently been discussed during the workshop "Theoretical Nuclear Physics in Padova" on the occasion of his retirement from full professor at the University of Padova. He has oftentimes been the driving force behind numerous contributions to nuclear structure and nuclear reactions that are here reviewed: giant resonances, pairing correlations, collective modes, algebraic models, inelastic excitations, electromagnetic response, break-up and transfer reactions, coupled-channel formalism, clustering, subbarrier fusion processes, etc. Among these topics several inspirational works and ideas can be found that we would like to highlight. PACS. PACS-key discribing text of that key -PACS-key discribing text of that keyThis manuscript serves two scopes. On one hand, it is an account of some of the topics discussed in the recent workshop "Theoretical Nuclear Physics in Padova: a meeting in honor of Prof. Andrea Vitturi"[1] that was held in Padova on May 20 and 21 2019 on occasion of his retirement. On the other, the organizers and participants felt the duty to summarize in this review paper his extensive scientific production, beyond what was discussed at the meeting, because it spans a broad range of topics in low energy nuclear physics, trying to highlight several fruitful ideas and to shed new light on some less known papers that most certainly deserve further recognition.

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Two-particle transfer processes as a signature of shape phase transition in Zirconium isotopes

Cited by 2 publications

References 19 publications

The single-particle unit for alpha decay

The single-particle unit for alpha decay

An overview of the scientific contribution of Andrea Vitturi to nuclear physics

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