Sub-barrier fusion enhancement with radioactive<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>134</mml:mn></mml:msup></mml:math>Te

Kohley, Z.; Liang, J. F.; Shapira, D.; Gross, C. J.; Varner, R. L.; Allmond, J. M.; Kolata, J. J.; Mueller, P. E.; Roberts, A.

doi:10.1103/physrevc.87.064612

Cited by 31 publications

(31 citation statements)

References 53 publications

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“…The requirement to place on more solid bases, theoretical predictions where very neutron-rich exotic beams are used, is generally felt. Indeed, in those cases large effects on sub-barrier fusion cross sections are qualitatively expected, but not sytematically found [7,8].…”

Section: Introductionmentioning

confidence: 99%

Transfer couplings and hindrance far below the barrier for⁴⁰Ca +⁹⁶Zr

Stefanini

Montagnoli

Esbensen

et al. 2015

EPJ Web of Conferences

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Abstract. The sub-barrier fusion excitation function of 40 Ca + 96 Zr has been measured down to cross sections 2.4μb, i.e. two orders of magnitude smaller than obtained in the previous experiment, where the sub-barrier fusion of this system was found to be greatly enhanced with respect to 40 Ca + 90 Zr, and the need of coupling to transfer channels was suggested. The purpose of this work was to investigate the behavior of 40 Ca + 96 Zr fusion far below the barrier. The smooth trend of the excitation function has been found to continue, and the logarithmic slope increases very slowly. No indication of hindrance shows up, and a comparison with 48 Ca + 96 Zr is very useful in this respect. A new CC analysis of the complete excitation function has been performed, including explicitly one-and two-nucleon Q >0 transfer channels. Such transfer couplings bring significant cross section enhancements, even at the level of a few μb. Locating the hindrance threshold, if any, in 40 Ca + 96 Zr would require challenging measurements of cross sections in the sub-μb range.

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Section: Introductionmentioning

confidence: 99%

Transfer couplings and hindrance far below the barrier for⁴⁰Ca +⁹⁶Zr

Stefanini

Montagnoli

Esbensen

et al. 2015

EPJ Web of Conferences

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“…Because the Q-values for groundstate transfer of up to 14 neutrons from 132 Sn to 40 Ca are positive and all the ground state to ground-state transfer Q-values (Q gg ) for 48 Ca+ 132 Sn are negative, the large sub-barrier fusion enhancement in 40 Ca+ 132 Sn was attributed to the couplings to transfer [5]. Likewise, a large sub-barrier fusion enhancement observed in 40 Ca+ 134 Te was also attributed to the same mechanisms [6]. The interpretation of these measurements is supported by the stable beam experiment studying the fusion of 40 Ca and 124 Sn, which exhibits a very large subbarrier fusion enhancement [7].…”

Section: Introductionmentioning

confidence: 76%

Examining the role of transfer coupling in sub-barrier fusion ofTi46,50+Sn124

et al. 2016

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“…For convenience of comparison, the corresponding states are connected with dotted lines. The experimental n+ 19 O g.s. channel threshold E thr.…”

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confidence: 99%

Exploring the Physics of Unstable Nuclei

Volya¹

2015

Proceedings of the Conference on Advances in Radioactive Isotope Science (ARIS2014)

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In this presentation the Continuum Shell Model (CSM) approach is advertised as a powerful theoretical tool for studying physics of unstable nuclei. The approach is illustrated using 17 O as an example, which is followed by a brief presentation of the general CSM formalism. The successes of the CSM are highlighted and references are provided throughout the text. As an example, the CSM is applied perturbatively to 20 O allowing one to explore the effects of continuum on positions of weakly bound states and low-lying resonances, as well as to discern some effects of threshold discontinuity. An isolated quantum system is a convenient theoretical idealization, but with limited validity. In nuclear physics, recent observations of loosely bound nuclei, questions of stability of nuclear matter, and interest in the evolution of elements in the universe -all need this convenient idealization to be abandoned. Building a new theory that seamlessly spans form reaction physics to the idealized limit of closed systems is a theoretical challenge. Our goal in this presentation is to highlight a Continuum Shell Model approach [1] which is one among many theoretical strategies confronting this challenge. The method takes its roots from the Feshbach projection formalism [2, 3] and allows one to express the exact dynamics in the full Hilbert space with the one provided by an effective Hamiltonian in the intrinsic subspace of interest, Q :Here, threshold energy E thr. = 0 is the lower bound of the continuum spectrum. If E > E thr. then integral (2) has a pole that has to be avoided in the complex energy plane by separating the principal 1

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Sub-barrier fusion enhancement with radioactive134Te

Cited by 31 publications

References 53 publications

Transfer couplings and hindrance far below the barrier for⁴⁰Ca +⁹⁶Zr

Transfer couplings and hindrance far below the barrier for⁴⁰Ca +⁹⁶Zr

Examining the role of transfer coupling in sub-barrier fusion ofTi46,50+Sn124

Exploring the Physics of Unstable Nuclei

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Sub-barrier fusion enhancement with radioactive134Te

Cited by 31 publications

References 53 publications

Transfer couplings and hindrance far below the barrier for40Ca +96Zr

Transfer couplings and hindrance far below the barrier for40Ca +96Zr

Examining the role of transfer coupling in sub-barrier fusion ofTi46,50+Sn124

Exploring the Physics of Unstable Nuclei

Contact Info

Product

Resources

About

Transfer couplings and hindrance far below the barrier for⁴⁰Ca +⁹⁶Zr

Transfer couplings and hindrance far below the barrier for⁴⁰Ca +⁹⁶Zr