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For neutrons bound inside nuclei, baryon instability can manifest itself as a decay into undetectable particles (e.g., $\it n \to \nu \nu \bar{\nu} $), i.e., as a disappearance of a neutron from its nuclear state. If electric charge is…

Nuclear Theory · Physics 2009-11-07 Yuri Kamyshkov , Edwin Kolbe

A great deal of research work has been undertaken in the alpha-clustering study since the pioneering discovery, half a century ago, of 12C+12C molecular resonances. Our knowledge of the field of the physics of nuclear molecules has…

In an experiment performed at the Facility for Rare Isotope Beams (FRIB) using the FRIB Decay Station initiator (FDSi), 15 new half lives of isotopes near $^{54}$Ca were measured. A new method of extracting lifetimes from experimental data,…

A linear relation for charged-particle emissions is presented starting from the microscopic mechanism of the radioactive decay. It relates the logarithms of the decay half-lives with two variables, called $\chi'$ and $\rho'$, which depend…

Nuclear Theory · Physics 2009-10-29 Chong Qi , Furong Xu , Roberto J. Liotta , Ramon A. Wyss , M. Y. Zhang , C. Asawatangtrakuldee , D. Hu

A great deal of research work has been undertaken in alpha-clustering study since the pioneering discovery of 12C+12C molecular resonances half a century ago. Our knowledge on physics of nuclear molecules has increased considerably and…

Nuclear Experiment · Physics 2016-12-21 C. Beck

The neutron beta-decay lifetime plays an important role both in understanding weak interactions within the framework of the Standard Model and in theoretical predictions of the primordial abundance of 4He in Big Bang Nucleosynthesis. In…

The particle unbound $^{26}$O nucleus is located outside the neutron drip line, and spontaneously decays by emitting two neutrons with a relatively long life time due to the centrifugal barrier. We study the decay of this nucleus with a…

Nuclear Theory · Physics 2015-06-16 K. Hagino , H. Sagawa

We study the cluster emission properties of 224Ra and 238Pu employing the Barcelona-Catania-Paris-Madrid (BCPM) energy density functional (EDF). Starting from two-dimensional potential energy surfaces, coexisting fission paths are…

Nuclear Theory · Physics 2023-12-25 Samuel A. Giuliani , Luis M. Robledo

The neutron lifetime is determined for now most accurately by two methods --the so-called "beam method" and the method of neutron storage in a trap. The goal of this research is to obtain the neutron lifetime with a higher precision by…

Nuclear Experiment · Physics 2020-01-23 Valerius V. Vasiliev

The double-beta (2$\beta$)-decay is the rarest nuclear physics process, and its experimental half-lives (T$_{1/2}$) exceed the age of the Universe from nine to fourteen orders of magnitude. Double-beta decay was observed, and its half-life…

Nuclear Experiment · Physics 2025-03-26 B. Pritychenko , V. I. Tretyak

Within our fission model, the Coulomb and proximity potential model (CPPM) cluster formation probabilities are calculated for different clusters ranging from carbon to silicon for the parents in the trans-tin and trans- lead regions. It is…

Nuclear Theory · Physics 2015-03-17 K. P. Santhosh , R. K. Biju , Sabina Sahadevan

The probability of $\alpha$ particle emission for some recently observed superheavy nuclei (SHN) are investigated. The $\alpha$-decay half lives of SHN are calculated in a quantum tunneling model with density dependent M3Y (DDM3Y) effective…

Nuclear Theory · Physics 2011-03-02 Partha Roy Chowdhury , G. Gangopadhyay , Abhijit Bhattacharyya

The existence of a new type of cluster decay called "collinear cluster tri-partition" (CCT) is discussed by an analysis of the landscape of the potential energy surface (PES). The total energy of the ternary system is found as a sum the…

Nuclear Theory · Physics 2015-06-18 A. K. Nasirov , W. von Oertzen , A. I. Muminov , R. B. Tashkhodjaev

In the present study, the newly established preformation formula is applied for the first time to study the kinematics of the cluster emission from various radioactive nuclei, especially those decaying to the double-shell closure $^{208}$Pb…

Nuclear Theory · Physics 2023-06-28 Joshua T. Majekodunmi , M. Bhuyan , K. Anwar , N. Abdullah , Raj Kumar

In the Coulomb and Proximity Potential Model (CPPM) framework, we have investigated the cluster radioactivity and alpha decay half-lives of superheavy nuclei. We study 22 different versions of proximity potential forms that have been…

Nuclear Theory · Physics 2025-03-17 Xuanpeng Xiao , Panpan Qi , Gongming Yu , Haitao Yang , Qiang Hu

Tests on $B-L$ symmetry breaking models are important probes to search for new physics. One proposed model with $\Delta(B-L)=2$ involves the oscillations of a neutron to an antineutron. In this paper a new limit on this process is derived…

High Energy Physics - Experiment · Physics 2017-11-29 SNO Collaboration , B. Aharmim , S. N. Ahmed , A. E. Anthony , N. Barros , E. W. Beier , A. Bellerive , B. Beltran , M. Bergevin , S. D. Biller , K. Boudjemline , M. G. Boulay , B. Cai , Y. D. Chan , D. Chauhan , M. Chen , B. T. Cleveland , G. A. Cox , X. Dai , H. Deng , J. A. Detwiler , P. J. Doe , G. Doucas , P. -L. Drouin , F. A. Duncan , M. Dunford , E. D. Earle , S. R. Elliott , H. C. Evans , G. T. Ewan , J. Farine , H. Fergani , F. Fleurot , R. J. Ford , J. A. Formaggio , N. Gagnon , J. TM. Goon , K. Graham , E. Guillian , S. Habib , R. L. Hahn , A. L. Hallin , E. D. Hallman , P. J. Harvey , R. Hazama , W. J. Heintzelman , J. Heise , R. L. Helmer , A. Hime , C. Howard , M. Huang , P. Jagam , B. Jamieson , N. A. Jelley , M. Jerkins , K. J. Keeter , J. R. Klein , L. L. Kormos , M. Kos , A. Kruger , C. Kraus , C. B. Krauss , T. Kutter , C. C. M. Kyba , R. Lange , J. Law , I. T. Lawson , K. T. Lesko , J. R. Leslie , I. Levine , J. C. Loach , R. MacLellan , S. Majerus , H. B. Mak , J. Maneira , R. D. Martin , N. McCauley , A. B. McDonald , S. R. McGee , M. L. Miller , B. Monreal , J. Monroe , B. G. Nickel , A. J. Noble , H. M. O'Keeffe , N. S. Oblath , C. E. Okada , R. W. Ollerhead , G. D. OrebiGann , S. M. Oser , R. A. Ott , S. J. M. Peeters , A. W. P. Poon , G. Prior , S. D. Reitzner , K. Rielage , B. C. Robertson , R. G. H. Robertson , M. H. Schwendener , J. A. Secrest , S. R. Seibert , O. Simard , J. J. Simpson , D. Sinclair , P. Skensved , T. J. Sonley , L. C. Stonehill , G. Tesic , N. Tolich , T. Tsui , R. Van Berg , B. A. VanDevender , C. J. Virtue , B. L. Wall , D. Waller , H. Wan Chan Tseung , D. L. Wark , J. Wendland , N. West , J. F. Wilkerson , J. R. Wilson , A. Wright , M. Yeh , F. Zhang , K. Zuber

In this work, a microscopic effective nucleon-nucleon interaction based on the Dirac-Brueckner-Hartree-Fock $G$ matrix starting from a bare nucleon-nucleon interaction is used to explore the $\alpha$-decay half-lives of the nuclei near…

Nuclear Theory · Physics 2025-11-12 Jing Li , Shan He , Yueqing Li , Weiwei Wang , Yanzhao Wang , Jianzhong Gu

In present work, we systematically study the $\alpha$ decay half-lives of 170 even-even nuclei with $60 \leqslant Z \leqslant 118$ within the two-potential approach while the $\alpha$ decay preformation factor $P_\alpha$ is obtained by the…

Nuclear Theory · Physics 2020-05-11 H. M. Liu , J. Y. Xu , J. G. Deng , B. He , X. H. Li

Neutron decay spectroscopy has become a successful tool to explore nuclear properties of nuclei with the largest neutron-to-proton ratios. Resonances in nuclei located beyond the neutron dripline are accessible by kinematic reconstruction…

$\alpha$-clustering study since the pioneering discovery of $^{12}$C+$^{12}$C molecular resonances half a century ago. Our knowledge on physics of nuclear molecules has increased considerably and nuclear clustering remains one of the most…

Nuclear Experiment · Physics 2017-08-23 C. Beck