Gamow-Teller Transitions for Light Nuclei by the Deformed Quasi-particle RPA(DQRPA) Soongsil University, Korea Eun Ja HA and Myung-Ki CHEOUN 12011 HNP.

Slides:

Advertisements

Similar presentations

Modern Theory of Nuclear Structure, Exotic Excitations and Neutrino-Nucleus Reactions N. Paar Physics Department Faculty of Science University of Zagreb.

Advertisements

Giant resonances, exotic modes & astrophysics

Spectroscopy at the Particle Threshold H. Lenske 1.

12 June, 2006Istanbul, part I1 Mean Field Methods for Nuclear Structure Part 1: Ground State Properties: Hartree-Fock and Hartree-Fock- Bogoliubov Approaches.

Beta decay and Structure of Exotic Nuclei near 78 Ni Alexander Lisetskiy NSCL,JINA,MSU.

John Daoutidis October 5 th 2009 Technical University Munich Title Continuum Relativistic Random Phase Approximation in Spherical Nuclei.

International Workshop on Fundamental Symmetries: From Nuclei and Neutrinos to the Universe ECT*, Trento, June 2007 Charged-Current Neutrino-Nucleus.

Double beta decay nuclear matrix elements in deformed nuclei O. Moreno, R. Álvarez-Rodríguez, P. Sarriguren, E. Moya de Guerra F. Šimkovic, A. Faessler.

P461 - Nuclei II1 Nuclear Shell Model Potential between nucleons can be studied by studying bound states (pn, ppn, pnn, ppnn) or by scattering cross sections:

I. Bentley and S. Frauendorf Department of Physics University of Notre Dame, USA Calculation of the Wigner Term in the Binding Energies by Diagonalization.

0νββ nuclear matrix elements within QRPA and its variants W. A. Kamiński 1, A. Bobyk 1 A. Faessler 2 F. Šimkovic 2,3, P. Bene š 4 1 Dept. of Theor. Phys.,

NUCLEAR STRUCTURE PHENOMENOLOGICAL MODELS

Opportunities for low energy nuclear physics with rare isotope beam 현창호 대구대학교 과학교육학부 2008 년 11 월 14 일 APCTP.

Nucleons & Nuclei a quick guide to the real essentials in the subject which particle and nuclear physicists won’t tell you.

1 TCP06 Parksville 8/5/06 Electron capture branching ratios for the nuclear matrix elements in double-beta decay using TITAN ◆ Nuclear matrix elements.

Weak Interactions and Supernova Collapse Dynamics Karlheinz Langanke GSI Helmholtzzentrum Darmstadt Technische Universität Darmstadt Erice, September 21,

Statistical properties of nuclei: beyond the mean field Yoram Alhassid (Yale University) Introduction Beyond the mean field: correlations via fluctuations.

Tomohiro Oishi 1,2, Markus Kortelainen 2,1, Nobuo Hinohara 3,4 1 Helsinki Institute of Phys., Univ. of Helsinki 2 Dept. of Phys., Univ. of Jyvaskyla 3.

FermiGasy. W. Udo Schröder, 2005 Angular Momentum Coupling 2 Addition of Angular Momenta    

Mary Beard University of Notre Dame Reaction Rates Calculations in Dense Stellar Matter Frontiers 2005 Aim: To establish a general reaction.

4. The rotating mean field. The mean field concept A nucleon moves in the mean field generated by all nucleons. The mean field is a functional of the.

1 New formulation of the Interacting Boson Model and the structure of exotic nuclei 10 th International Spring Seminar on Nuclear Physics Vietri sul Mare,

LBL 5/21/2007J.W. Holt1 Medium-modified NN interactions Jeremy W. Holt* Nuclear Theory Group State University of New York * with G.E. Brown, J.D. Holt,

Mean-Field Description of Heavy Neutron-Rich Nuclei P. D. Stevenson University of Surrey NUSTAR Neutron-Rich Minischool Surrey, 2005.

Neutrino-nucleus interaction and its role in supernova dynamics and nucleosynthesis Karlheinz Langanke GSI Helmholtzzentrum Darmstadt Technische Universität.

The calculation of Fermi transitions allows a microscopic estimation (Fig. 3) of the isospin mixing amount in the parent ground state, defined as the probability.

Neutrino-Nucleus Reactions and Nucleosynthesis Toshio Suzuki Nihon University Roles of ν-process in nucleosynthesis 核物理から見た宇宙 New Era of Nuclear Physics.

Lecture 16: Beta Decay Spectrum 29/10/2003 (and related processes...) Goals: understand the shape of the energy spectrum total decay rate sheds.

Realistic Calculations of Neutrino-Nucleus Reaction Cross sections T.S. Kosmas Realistic Calculations of Neutrino-Nucleus Reaction Cross sections T.S.

1 Proton-neutron pairing by G-matrix in the deformed BCS Soongsil University, Korea Eun Ja Ha Myung-Ki Cheoun.

Isospin mixing and parity- violating electron scattering O. Moreno, P. Sarriguren, E. Moya de Guerra and J. M. Udías (IEM-CSIC Madrid and UCM Madrid) T.

Coupling of (deformed) core and weakly bound neutron M. Kimura (Hokkaido Univ.)

Dott. Antonio Botrugno Ph.D. course UNIVERSITY OF LECCE (ITALY) DEPARTMENT OF PHYSICS.

Lesson 13 Nuclear Astrophysics. Elemental and Isotopic Abundances.

NEUTRON SKIN AND GIANT RESONANCES Shalom Shlomo Cyclotron Institute Texas A&M University.

1 Systematic calculations of alpha decay half-lives of well- deformed nuclei Zhongzhou REN ( 任中洲 ) Department of Physics, Nanjing University, Nanjing,

Lecture 6 p+p, Helium Burning and Energy Generation.

1 Gamow-Teller strength in deformed QRPA with np-pairing Eun Ja Ha (Soongsil University) in collaboration with Myung-Ki Cheoun (Soongsil University) F.

Study on ν-A Reaction Cross Sections within CRPA Jeong-Yeon LEE and Yeong-Duk KIM Sejong University, KOREA.

Three-body force effect on the properties of asymmetric nuclear matter Wei Zuo Institute of Modern Physics, Lanzhou, China.

July 29-30, 2010, Dresden 1 Forbidden Beta Transitions in Neutrinoless Double Beta Decay Kazuo Muto Department of Physics, Tokyo Institute of Technology.

Effect of tensor on halo and subshell structure in Ne, O and Mg isotopes Chen Qiu Supervisor: Prof. Xian-rong Zhou Xiamen University April. 13, 2012.

Time Dependent Quark Masses and Big Bang Nucleosynthesis Myung-Ki Cheoun, G. Mathews, T. Kajino, M. Kusagabe Soongsil University, Korea Asian Pacific Few.

Variational approach to isospin symmetry breaking in medium mass nuclei A. PETROVICI Institute for Physics and Nuclear Engineering, Bucharest, Romania.

Shape evolution of highly deformed 75 Kr and projected shell model description Yang Yingchun Shanghai Jiao Tong University Shanghai, August 24, 2009.

Weak decay of  in nuclear medium FCPPL-2015, USTC, April 8-12, 2015 Institute of High Energy Physics Qiang Zhao Institute of High Energy Physics, CAS.

„The uncertainty in the calculated nuclear matrix elements for neutrinoless double beta decay will constitute the principle obstacle to answering some.

Quantum Phase Transitions in Nuclei

PROPERTIES OF HIGH-ENERGY ISOSCALAR MONOPOLE EXCITATIONS IN MEDIUM-HEAVY MASS SPHERICAL NUCLEI M. L. Gorelik 1), S. Shlomo 2), B. A. Tulupov 3), M. H.

Few-Body Models of Light Nuclei The 8th APCTP-BLTP JINR Joint Workshop June 29 – July 4, 2014, Jeju, Korea S. N. Ershov.

Nuclear Matrix Elements in Double Beta Decay S.J.Freeman University of Manchester What they are and why they are important How they can be calculated What.

Amand Faesler, University of Tuebingen, Germany. Short Range Nucleon-Nucleon Correlations, the Neutrinoless Double Beta Decay and the Neutrino Mass.

Electric Dipole Response, Neutron Skin, and Symmetry Energy

Determining Reduced Transition Probabilities for 152 ≤ A ≤ 248 Nuclei using Interacting Boson Approximation (IBA-1) Model By Dr. Sardool Singh Ghumman.

The role of isospin symmetry in medium-mass N ~ Z nuclei

Active lines of development in microscopic studies of

Mean free path and transport parameters from Brueckner-Hartree-Fock

Unblocking of the Gamow-Teller Strength for Stellar Electron Capture

Kazuo Muto Tokyo Institute of Technology (TokyoTech)

Self-consistent theory of stellar electron capture rates

Gamow-Teller strength in deformed QRPA with np-pairing

Intermediate-mass-fragment Production in Spallation Reactions

Nuclear excitations in relativistic nuclear models

Myung-Ki Cheoun Soongsil University, Seoul, Korea

Neutrino Reaction in Nuclear-Astro Physics

Allowed Gamow-Teller (GT) strengths and β+-decay rates for Odd-A nuclei Jameel-Un Nabi Ghulam Ishaq Khan Institute Of Engineering Sciences and Technology.

Myung-Ki Cheoun Department of Physics,

Kazuo MUTO Tokyo Institute of Technology

Soongsil University, Seoul, Korea

Coupled-channel study of fine structure in the alpha decay of well-deformed nuclei Zhongzhou REN (任中洲) Department of Physics, Nanjing University, Nanjing,

Presentation transcript:

Gamow-Teller Transitions for Light Nuclei by the Deformed Quasi-particle RPA(DQRPA) Soongsil University, Korea Eun Ja HA and Myung-Ki CHEOUN HNP

Contents Motivation Formalism - Deformed basis (Nilsson basis) - Deformed Bardeen Cooper Schrieffer (DBCS) - Deformed quasi-particle random phase approximation (DQRPA) - Gamow-Teller transitions for the nuclear beta decay Results Summary HNP

SKKU, 17 June MotivationsFormalismResultsSummary X-ray and Super Burst ～ 3hours Time scale ：～ a few hours Total energy : erg (normal burst ~ erg) Total energy : erg (normal burst ~ erg) Supernovae Type II HNP

SKKU, 17 June Pycno ‐ reaction (Haensel & Zdunik1990 ) Because of high density and low temperature on the neutron star crust, Coulomb barrier is overcome by the zero-point motion of the nuclei in the solid lattice !! Degenerated electrons block the beta decay. Ordinary nuclei become highly unstable, and unstable nuclei become the normal stable nuclei at the neutron-star crusts !! 4 MotivationsFormalismResultsSummary 2011 HNP

5 spherical basis deformation np-pairing correlation MotivationsFormalismResultsSummary ☞ The conventional approach so far to understand the nuclear structure is based on the spherical symmetry HNP

6 We extend our previous QRPA based on the spherical symmetry, which turns out to be a very useful tool for relevant reactions in the nuclear- astrophysics. MotivationsFormalismResultsSummary 2011 HNP

Realistic two body interaction taken by Brueckner G-matrix based on the Bonn potential Deformed WS Deformed BCS Deformed QRPA Gamow-Teller transition 7 Without np-pairing With np-pairing(in progress) MotivationsResultsSummaryFormalismFormalism 2011 HNP

The single particle states 8 Spin w.f Axially symmetric harmonic oscillator w.f. MotivationsResultsSummaryFormalism 2011 HNP

The deformed basis(Nilsson basis) is expanded 9 Spherical harmonic oscillator w. f. MotivationsResultsSummaryFormalism By Including deformation 2011 HNP

Deformed BCS Deformed BCS In order to renormalize the G-matrix, theoretical values are adjusted to the empirical pairing potentials by multiplying the G-matrix with a strength parameters g pp (g nn ). 10 MotivationsResultsSummaryFormalism By Including deformation by a symmetric five term formula 2011 HNP

Description of Intermediate States for Gamow-Teller excitation K=1,0,-1 11 MotivationsResultsSummaryFormalism DQRPA equation 2011 HNP

12 particle-hole particle-particle MotivationsResultsSummaryFormalism Realistic two body interaction taken by Brueckner G-matrix based on the Bonn potential By Including deformation 2011 HNP

Beta- transition amplitude 13 MotivationsResultsSummaryFormalism 2011 HNP

14 ResultsFormalismSummaryMotivationsResultsSummaryFormalism Ikeda sum rule in percentage of 3(N-Z) 2011 HNP

15 Gamow-Teller Strength in 26 Mg ResultsFormalismSummaryMotivationsResultsSummaryFormalism Experiment by Madey (1987) 2011 HNP

16 Gamow-Teller Strength in 60 Ni ResultsFormalismSummaryMotivationsResultsSummaryFormalism Experiment Ours 60 Ni (p,n) 60 Cu 60 Ni (n,p) 60 Co 2011 HNP

17 Gamow-Teller strength in 76 Ge Experiment ResultsFormalismSummaryMotivationsResultsSummaryFormalism Calculatiion by Fedor HNP

18 1. To describe a single particle state in deformed basis, we used the deformed axially symmetric Woods-Saxon potential. And then we performed the deformed BCS and deformed QRPA with realistic two-body interaction calculated by Brueckner G-matrix based on Bonn potential. 2. We calculated the Gamow-Teller transitions in 26 Mg, 60 Ni, and 76 Ge. Our results are reproduced well the position of energy with available experimental data and other calculations but we have some problem for the B(GT) strength. 3. We are checking transition operator and np-pairing correlations to improve the B(GT) strength. MotivationsFormalismResultsSummary 2011 HNP

19 1. Next stage is E1 and E2 transitions in unstable nuclei to study the inversion island, which comes from the shell evolution sensitive to the deformation. 2. Weak interactions with unstable nuclei by the neutrino, in specific, stemmed from the supernova explosion are also one of the interesting topics, because relevant cross sections are believed to differ from those in stable nuclei and affect rapid processes in the nucleosynthesis on the corecollapsing supernovae and/or the crust of the neutron star with a binary star. Future works 2011 HNP

Thanks for your attention !! HNP