RECENT EXPERIMENTAL STUDIES OF NUCLEAR ASTROPHYSICS USING INTERMEDIATE-ENERGY EXOTIC BEAMS

2006 ◽  
Author(s):  
TOHRU MOTOBAYASHI
Keyword(s):  
Experimental Studies ◽  
Nuclear Astrophysics ◽  
Intermediate Energy ◽  
Exotic Beams

scholarly journals Transfer Reactions As a Tool in Nuclear Astrophysics

2021 ◽  
Vol 8 ◽  
Author(s):  
Faïrouz Hammache ◽  
Nicolas de Séréville
Keyword(s):  
Cross Sections ◽  
Transfer Reaction ◽  
Nuclear Reactions ◽  
Experimental Studies ◽  
Nuclear Astrophysics ◽  
Spectroscopic Properties ◽  
Reaction Rates ◽  
Theoretical Concept ◽  
Reaction Method ◽  
Basic Features

Nuclear reaction rates are one of the most important ingredients in describing how stars evolve. The study of the nuclear reactions involved in different astrophysical sites is thus mandatory to address most questions in nuclear astrophysics. Direct measurements of the cross-sections at stellar energies are very challenging–if at all possible. This is essentially due to the very low cross-sections of the reactions of interest (especially when it involves charged particles), and/or to the radioactive nature of many key nuclei. In order to overcome these difficulties, various indirect methods such as the transfer reaction method at energies above or near the Coulomb barrier are used to measure the spectroscopic properties of the involved compound nucleus that are needed to calculate cross-sections or reaction rates of astrophysical interest. In this review, the basic features of the transfer reaction method and the theoretical concept behind are first discussed, then the method is illustrated with recent performed experimental studies of key reactions in nuclear astrophysics.

scholarly journals THE PATH TO IMPROVED REACTION RATES FOR ASTROPHYSICS

2011 ◽  
Vol 20 (05) ◽  
pp. 1071-1169 ◽  
Author(s):  
THOMAS RAUSCHER
Keyword(s):  
Strong Interaction ◽  
Nuclear Reactions ◽  
Experimental Studies ◽  
Nuclear Astrophysics ◽  
Reaction Rates ◽  
Light Ions ◽  
Α Particles

This review focuses on nuclear reactions in astrophysics and, more specifically, on reactions with light ions (nucleons and α particles) proceeding via the strong interaction. It is intended to present the basic definitions essential for studies in nuclear astrophysics, to point out the differences between nuclear reactions taking place in stars and in a terrestrial laboratory, and to illustrate some of the challenges to be faced in theoretical and experimental studies of those reactions. The discussion revolves around the relevant quantities for astrophysics, which are the astrophysical reaction rates. The sensitivity of the reaction rates to the uncertainties in the prediction of various nuclear properties is explored and some guidelines for experimentalists are also provided.

Use of Large Surface MicroChannel Plates for the Tagging of Intermediate Energy Exotic Beams

2011 ◽  
Vol 215 (1) ◽  
pp. 272-274 ◽  
Author(s):  
I. Lombardo ◽  
F. Amorini ◽  
G. Cardella ◽  
S. Cavallaro ◽  
E. De Filippo ◽  
...  
Keyword(s):  
Intermediate Energy ◽  
Microchannel Plates ◽  
Exotic Beams

STUDY OF EXOTIC BEAMS INDUCED REACTIONS IN THE REGION OF 11Be WITH CHIMERA ARRAY

2010 ◽  
Vol 19 (05n06) ◽  
pp. 1096-1101
Author(s):  
F. AMORINI ◽  
A. ANZALONE ◽  
L. AUDITORE ◽  
G. CARDELLA ◽  
S. CAVALLARO ◽  
...  
Keyword(s):  
Intermediate Energy ◽  
Exotic Nuclei ◽  
Halo Nuclei ◽  
Complex Study ◽  
Exotic Beams

Intermediate energy beams of light exotic nuclei have been produced at LNS by the FRIBs facility. Thanks to these beams, a complex study of the structure of halo nuclei in the 11 Be region has been started exploiting the performances of the CHIMERA array.

scholarly journals Momentum dependent mean-fields of hyperons & antihyperons

2021 ◽  
Vol 252 ◽  
pp. 05006
Author(s):  
Arsenia Chorozidou ◽  
Theodoros Gaitanos
Keyword(s):  
Experimental Studies ◽  
Mean Field ◽  
Nuclear Astrophysics ◽  
Effective Field ◽  
Momentum Dependence ◽  
Chiral Effective Field Theory ◽  
Relativistic Mean Field ◽  
Optical Potentials ◽  
Nuclear Systems ◽  
Mean Fields

The in-medium properties of hyperons and antihyperons are studied with the Non-Linear Derivative (NLD) model and focus is made on the momentum dependence of strangeness optical potentials. The NLD model is based on the Relativistic Mean Field (RMF) approximation to Relativistic Hadrodynamics (RHD) approach of nuclear systems, but it incorporates an explicit momentum dependence of mean-fields. The extension of the NLD model to the baryon and antibaryon octet is based on SU(6) and G-parity arguments. It is demonstrated that with a proper choice of momentum cut-offs, the Λ and Σ optical potentials are consistent with recent studies of the chiral effective field theory(χ -EFT) and optical potentials are consistent with Lattice-QCD calculations, over a wide momentum region. We also present NLD predictions for the in-medium momentum dependence of ∧¯, ∑¯ and Ξ¯ hyperons. This work is important for future experimental studies, like CBM, PANDA at FAIR and is relevant to nuclear astrophysics as well.

scholarly journals Intermediate-Energy Fragmentation of Heavy-Element Beams: A Novel Approach Towards the Nuclear Drip-Lines

2019 ◽  
Vol 10 ◽  
pp. 179
Author(s):  
G. A. Souliotis
Keyword(s):  
Lower Energy ◽  
Heavy Element ◽  
Experimental Studies ◽  
Intermediate Energy ◽  
Projectile Fragmentation ◽  
Heavy Nuclei ◽  
Novel Approach ◽  
Proton Radioactivity ◽  
R Process ◽  
Neutron Dripline

The fragmentation of heavy beams at intermediate energy and the opportunities offered by this in the exploration of heavy nuclei near the drip lines will be discussed. First, a study of 1 9 7Au projectile fragmentation at 30 MeV/nucleon will be presented in which an appreciable number of new p-rich nuclei were observed. Perspectives of proton radioactivity studies using the fragmentation approach will be discussed. Second, a study of the fission of 2 3 8U projectiles at 20 MeV/nucleon will be presented, where a number of new neutron rich nuclei were identified. Production rates of extremely η-rich nuclides from a typical projectile-fragmentation facility are given. A large number of nuclei along the astrophysical r-process path can be investigated and approach of the neutron dripline in the region Z=45-50 may be possible. The ability to produce and study these either p-rich or η-rich nuclei at intermediate (and possibly lower) energy facilities may open a variety of possibilities for experimental studies of exotic heavy nuclei.

Sign in / Sign up

Export Citation Format

Share Document