The 17th International Symposium on Origin of Matter and Evolution of Galaxies

Session

Experimental Nuclear Physics for Astrophysics

10 Sept 2024, 11:00

Conveners

Experimental Nuclear Physics for Astrophysics

• Livius Trache (IFIN-HH)

Experimental Nuclear Physics for Astrophysics

• Weiping Liu

Experimental Nuclear Physics for Astrophysics

• Shigeru Kubono (RIKEN Nishina Center)

Experimental Nuclear Physics for Astrophysics

• Richard deBoer (University of Notre Dame)

Experimental Nuclear Physics for Astrophysics

• Weiping Liu

Experimental Nuclear Physics for Astrophysics

• Toshitaka Kajino (Beihang University, National Astronomical Observatory of Japan, University of Tokyo)

22. Studying astrophysical reactions with low-energy RI beams - the projects at CRIB

Hidetoshi YAMAGUCHI (Center for Nuclear Study, the University of Tokyo)

10/09/2024, 11:00

Experimental Nuclear Physics for Astrophysics

Invited Talk

The radioactive isotopes (RI) seldom exist on the earth, but they
can be created in the universe and often play an important role in explosive stellar sites,
contributing to the nucleosynthesis, stellar evolution and thermal dynamics.

Several experimental projects at CRIB [1-3], a low-energy RI beam separator operated by Center for Nuclear Study, the University of Tokyo and located at...

61. Measurement of the γ Decay Probability of the Hoyle State

Kosuke SAKANASHI (Department of Physics, Osaka University)

10/09/2024, 11:25

Experimental Nuclear Physics for Astrophysics

Invited Talk

The triple alpha (3$\alpha$) reaction is one of the most important processes in the nucleosynthesis. In this reaction, an $\alpha$ particle is captured by the 2$\alpha$ resonance of ${}^8\mathrm{B}\mathrm{e}$, and form a 3$\alpha$ cluster state with weakly bound $\alpha$ particles. Most of the 3$\alpha$ resonance states decay to three $\alpha$ particles, but a tiny fraction of them decays to the ground...

45. Transfer reaction measurements using proton beams for astrophysical reaction rates and proton branching ratios

Kyungyuk CHAE

10/09/2024, 14:50

Experimental Nuclear Physics for Astrophysics

Invited Talk

Transfer reaction measurements in normal kinematics using light stable beams are very powerful tools to study the properties of single-particle states of unstable nuclei important for astrophysical phenomena. The measurements are also useful to extract the proton branching ratios of populated excited states of unstable nuclei. In the presentation, we will summarize the results of proton...

91. Role of neutron-rich nuclei in r-process nucleosynthesis

Shunji NISHIMURA (RIKEN)

10/09/2024, 15:15

Invited Talk

Where and how were heavy elements which contain many neutrons relative to proton, synthesized? With regards to the origin of these heavy elements, a reaction in which nuclei capture neutrons in a fast and continuous manner during the explosion of a star was proposed and named the rapid neutron capture process (r process) [1].

In 2017, a binary neutron star merger event was discovered by...

16. Study of 22,23Na+p resonance scattering via thick-target inverse kinematics method

youbao WANG (China Institute of Atomic Energy)

10/09/2024, 15:40

Experimental Nuclear Physics for Astrophysics

Oral Talk

22,23Na+p resonance scattering were studied via thick-target inverse kinematics method, for the exit-channel resonance parameters of compound nuclei 23,24Mg. High-purity 22Na secondary beam was produced by 1H(22Ne,22Na)n reaction at RIBLL1, excitation functions of 22Na(p,p) were obtained at two angles up to 4MeV. The deduced 23Mg resonances were used for the evalution of the reaction rates of...

105. Studies of nuclear properties involved in nucleosynthesis at CENS

Sunghoon (Tony) AHN (Center for Exotic Nuclear Studies, Institute for Basic Science)

10/09/2024, 16:15

Invited Talk

55. Non destructive lifetime measurement of isomeric states in heavy ion storage rings

Shahab SANJARI (GSI Darmstadt)

10/09/2024, 16:40

Experimental Nuclear Physics for Astrophysics

Invited Talk

Storage rings provide a unique experimental environment for non-destructive measurements of the mass and lifetime of unstable nuclei and/or their isomeric states. With their high resolution, cavity based Schottky detectors provide the speed and sensitivity required for such measurements. In order to increase the measurement accuracy, the velocity spread of the particles has to be dealt with....

106. Bρ-defined isochronous mass spectrometry at CSRe-Lanzhou

Meng WANG (IMP)

10/09/2024, 17:05

Invited Talk

Accurate nuclear masses not only provide indispensable information on nuclear structure, but also deliver important input data for applications in nuclear astrophysics. The challenge today is to obtain accurate masses of nuclei located far away from the valley of stability. Recently, we have developed a brand new technique, the Bρ-defined isochronous mass spectrometry (IMS), at the cooler...

58. Construction of active target TPC in CENS

Soomi CHA (Center for Exotic Nuclear Studies, Institute for Basic Science)

10/09/2024, 17:30

Experimental Nuclear Physics for Astrophysics

Oral Talk

Active Target Time Projection Chamber (AT-TPC) is one of advanced particle detectors which allows a precise measurement of nuclear reactions using rare isotope beams at the present and future nuclear physics facilities. A new Active Target TPC for Multiple nuclear physics eXperiments (AToM-X) is being developed at the Center for Exotic Nuclear Studies (CENS). It consists of a highly segmented...

40. Effect of coherent neutrino elastic scattering off many atoms to core-collapse supernova explosions

Tatsushi SHIMA (Research Center for Nuclear Physics, Osaka University)

11/09/2024, 09:00

Experimental Nuclear Physics for Astrophysics

Invited Talk

It has been a long-standing problem that the available kinetic energy is insufficient in the theoretical simulation of the core-collapse supernova explosions. In this work, the energy transfer via the coherent scattering of neutrinos with matter in outgoing shockwave is studied by numerical evaluation for the expected energy transfer. It was found that the process can be a candidate of a new...

90. "Other" Indirect Methods in Nuclear Astrophysics

Livius TRACHE (IFIN-HH)

11/09/2024, 09:25

Invited Talk

It is an widely accepted and used idea that when we cannot make direct measurements for nuclear reactions that are important in nuclear astrophysics due to very small cross sections and/or for impossible/difficult projectile combinations, we resort to indirect methods. There many Indirect Methods in Nuclear astrophysics, some well known. I will discuss here two less known ones: fusion of light...

78. Experimental studies of key resonances for explosive hydrogen and helium burning

Christopher WREDE (Michigan State University and Facility for Rare Isotope Beams)

11/09/2024, 09:50

Experimental Nuclear Physics for Astrophysics

Invited Talk

An experimental program to address uncertainties in the thermonuclear rates of proton and alpha induced reactions with the greatest influence on the modeling of astronomical observables from transient events including classical novae and X-ray bursts will be described. The goal is to discover and characterize key resonances in reactions on unstable reactants by measuring their energies and...

74. Measurement of ${}^{58}$Ni(${}^3$He,n)${}^{60}$Zn reaction to investigate X-ray burst light curve

Tatsuya FURUNO (Osaka University)

11/09/2024, 10:35

Experimental Nuclear Physics for Astrophysics

Oral Talk

X-ray burst is frequently observed thermonuclear explosion events in the universe. Understanding its light curve is inevitable to unveil the properties of neutron stars. The shape of the light curve is sensitive to many nuclear reaction rates. It is shown that the ${}^{59}$Cu(p,$\gamma$)${}^{60}$Zn and ${}^{59}$Cu(p,$\alpha$)${}^{56}$Ni reaction rates have the largest influence on the light curve....

7. Operation and Experiment Introduction of the CSNS Back-n White Neutron Facility

Ruirui FAN (China Spallation Neutron Source)

11/09/2024, 10:50

Experimental Nuclear Physics for Astrophysics

Oral Talk

The Back-n white neutron facility is a comprehensive experimental platform that serves a wide spectrum of research goals, including nuclear data measurement, experiments in nuclear physics and astrophysics, calibration of neutron detectors, investigation of neutron radiation effects, and applications in archaeology, among others. Operational since 2018, this beamline has facilitated over 300...

11. Electron scattering for online-produced unstable nucleus at the RIKEN SCRIT facility

Prof. Toshimi SUDA (Tohoku University)

11/09/2024, 11:05

Experimental Nuclear Physics for Astrophysics

Oral Talk

Electron scattering is the gold standard for probing nuclear structures, consistently playing an essential role in revealing the internal structures of atomic nuclei and in establishing modern pictures of their structures. To date, its application, however, has been strictly limited to stable nuclei (with some exceptions such as 3H), leaving short-lived unstable nuclei...

2. Measurement of the 159Tb(n, γ) cross section at the CSNS Back-n facility

SuYaLaTu ZHANG

11/09/2024, 11:20

Experimental Nuclear Physics for Astrophysics

Oral Talk

We report the measurement of 159Tb(n, γ) cross sections up to 1 MeV neutron energy with the TOF method at the back streaming white neutron facility of the China Spallation Neutron Source (CSNS), which is the only high intense pulsed spallation reaction neutron source in China at present. The resonance kernels of 159Tb (n, γ) are obtained up to 1.2 keV, and the MACS for the astrophysical...

31. Direct measurement of the cross section for 102Pd(p,g)103Ag reaction in the p-process

Fulong LIU

11/09/2024, 13:30

Experimental Nuclear Physics for Astrophysics

Oral Talk

The study of the p-process is of paramount importance in unraveling the origin of heavy elements in the universe. To describe the entire p-nuclei nucleosynthesis process, a comprehensive reaction network involving over ten thousand nuclear reactions is required, and accurate measurements of some key reaction cross sections are essential for determining reaction rates. 102Pd is one of the more...

76. Study of $\nu p-$process nucleosynthesis in core collapse supernovae via ${}^{56}$Ni($d,p$) reaction

Jiatai LI (Center for Nuclear Study, the University of Tokyo)

11/09/2024, 13:45

Experimental Nuclear Physics for Astrophysics

Oral Talk

Understanding the origin of elements in our universe is an inevitable mission for modern nuclear physics. It is known that neutron-deficient stable isotopes, referred to as $p-$nuclei, are synthesized through the $p$-process (or $\gamma$-process) triggered by photo-disintegration in supernovae. One of the major issues that remain unresolved is the anomalously large abundances for certain...

50. Exploring Nuclear Astrophysics using Heavy-Ion Storage Rings

Ragandeep Singh SIDHU (The University of Edinburgh)

Experimental Nuclear Physics for Astrophysics

Invited Talk

Storage rings are powerful tools for conducting precision experiments with both stored highly-charged stable and radioactive ions in the realm of nuclear structure and astrophysics. The storage rings at GSI Helmholtz Center in Darmstadt, Germany, namely, the heavy-ion storage ring - Experimental Storage Ring (ESR), and the low energy storage ring - CRYRING provide unique possibilities to...

107. Indirect measurement in CIAE

Bing GUO (CIAE)

Invited Talk