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The dissociation of halo nuclei through their collision with light and heavy targets is considered within the Continuum Discretized Coupled Channels theory. We study the one-proton halo nucleus $^8$B and the one-neutron halo nucleus…

Nuclear Theory · Physics 2009-11-11 M. S. Hussein , R. Lichtenthäler , F. Nunes , I. J. Thompson

In our calculation of neutron star crust heating we include several key new model features. In earlier work electron capture (EC) only allowed neutron emission from the daughter ground-state; here we calculate, in a deformed QRPA model, EC…

Astrophysics · Physics 2008-12-18 Sanjib S. Gupta , Toshihiko Kawano , Peter Möller

In the present work, we study {\alpha} decay and proton emission half-lives within the modified Gamow-like model, which introduces the effects of the nucleus's deformation. The calculations show that it is necessary to consider the…

Nuclear Theory · Physics 2022-12-07 Qiong Xiao , Jun-Hao Cheng , Tong-Pu Yu

We have calculated the $\beta^+$ decay of the proton rich nuclei $^{44}$V in a full fp-shell valence space. We obtain a theoretical half-life of 71~ms compared with the experimental value t$_{1/2}$ = 90 $\pm$ 25 ms. Besides, we make…

Nuclear Theory · Physics 2008-11-26 G. Martinez-Pinedo , A. Poves

During the last decade we have carried out a systematic study of the $\beta$ decay of neutron-deficient nuclei, providing rich spectroscopic information of importance for both nuclear structure and nuclear astrophysics. We present an…

Nuclear Experiment · Physics 2023-05-02 S. E. A. Orrigo , B. Rubio , W. Gelletly

The even-Z odd-N neutron-halo nuclei, which are the possible lightest neutron-halo nuclei heavier than $^{37}$Mg, are explored by studying the shell-structure unique in weakly-bound neutrons for spherical or deformed shape. It is pointed…

Nuclear Theory · Physics 2017-05-24 Ikuko Hamamoto

The experimentally predicted existence of a proton halo in $^8$B is confirmed by dynamical microscopic multiconfiguration cluster model calculations. The thickness of the proton halo in $^8$B is 0.5 $fm$ while in $^8$Li a 0.4 $fm$ thick…

Nuclear Theory · Physics 2009-10-22 Attila Csoto

The large-scale shell-model calculations have been performed for the neutron-rich nuclei in the south region of $^{208}$Pb in the nuclear chart. The $\beta$-decay properties, such as the $\log ft$, average shape factor values, half-lives,…

Several different processes could be changing the density in the core of a neutron star, leading to a departure from $\beta$ equilibrium, quantified by the chemical potential difference $\delta\mu\equiv\mu_n-\mu_p-\mu_e$. The evolution of…

Astrophysics · Physics 2009-11-11 Sergio Flores-Tulian , Andreas Reisenegger

A conceptual experimental method for providing a new measurement of the underlying beta decay spectra from fission products is presented. The goal is to provide additional information related to the prediction of the antineutrino emission…

Nuclear Experiment · Physics 2013-04-16 D. Asner , K. A. Burns , B. Greenfield , M. S. Kos , J. L. Orrell , M. Schram , B. A. VanDevender , D. Wootan

We investigated the effects of first-forbidden transitions in $\beta$ decays on the production of the r-process $A \sim 195$ peak. The theoretical calculated $\beta$-decay rates with $\beta$-delayed neutron emission were examined using…

High Energy Astrophysical Phenomena · Physics 2016-03-18 Nobuya Nishimura , Zsolt Podolyák , Dong-Liang Fang , Toshio Suzuki

$\beta$-decay spectroscopy provides valuable information on exotic nuclei and a stringent test for nuclear theories beyond the stability line. To search for new $\beta$-delayed protons and $\gamma$ rays of $^{25}$Si to investigate the…

In this paper we show how effective parameters such as effective binding energies can be defined for a proton in the combined nuclear-Coulomb potential, including also the target potential, in the case in which the proton is bound in a…

Nuclear Theory · Physics 2009-11-10 Angela Bonaccorso , David M. Brink , Carlos A. Bertulani

The elusive $\beta^-\text{p}^+$ decay was observed in $^{11}$Be by directly measuring the emitted protons and their energy distribution for the first time with the prototype Active Target Time Projection Chamber (pAT-TPC) in an experiment…

A comparison between full few-body Faddeev/Alt-Grassberger-Sandhas (Faddeev/AGS) and continuum-discretized coupled channels (CDCC) calculations is made for the resonant and nonresonant breakup of $^{11}$Be on proton target at 63.7 MeV/u…

Nuclear Theory · Physics 2010-04-06 E. Cravo , R. Crespo , A. M. Moro , A. Deltuva

The rate of the beta decay of neutral kaons is calculated within the meson dominance approach taking into account the relation between the KK\rho and \pi\pi\rho coupling constants which follows from the vector meson dominance in…

High Energy Physics - Phenomenology · Physics 2007-05-23 Peter Lichard , Julia Thompson

We present an analytic, recoil-order calculation of the proton asymmetry from polarized neutron $\beta$-decay. The differential decay rate in terms of electron energy and proton direction follows, parametrized in terms of the most general…

Nuclear Theory · Physics 2011-01-28 S. K. L. Sjue

Although the neutron (n) does not carry a total electric charge, its charge and magnetization distributions represented in momentum space by the electromagnetic form factors, $F_1^{(n)} (q^2)$ and $F_2^{(n)} (q^2)$, lead to an…

Nuclear Theory · Physics 2008-11-26 M. Nowakowski , N. G. Kelkar , T. Mart

We propose to search for neutron halo isomers populated via $\gamma$-capture in stable nuclei with mass numbers of about A=140-180 or A=40-60, where the $4s_{1/2}$ or $3s_{1/2}$ neutron shell model state reaches zero binding energy. These…

Nuclear Experiment · Physics 2015-05-19 D. Habs , M. Gross , P. G. Thirolf , P. Böni

One-proton emission from the $^{102}$Sb nucleus is discussed, assuming an inert $^{100}$Sn core and the valence proton and neutron. There are experimentally measured bound states in the $^{100}$Sn-neutron system, whereas no particle-bound…

Nuclear Theory · Physics 2025-02-24 Tomohiro Oishi , Masaaki Kimura , Lorenzo Fortunato