New Chances for Nuclear Astrophysics. Interdisciplinary research improved: observations astrophysical models nuclear theory NUCLEAR DATA. On the shoulders of giants. The Presence. The Foundation. Nuclear Physics at the eve of a new era. UNDERGROUND LABS (from LUNA to DUSEL)
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Gabriel Martínez Pinedo - ENNA: Theory
Gabriel Martínez Pinedo - ENNA: Theory
From Parksville, Geneve, Louvain
RIKEN, FRIB, FAIR
ISAC, RIKEN, FRIB, FAIR
Each heavy atom in our body was build and processed through ~100-1000 star generations since the initial Big Bang event!
We are made of star stuff
Signatures of Nucleosynthesis ~100-1000 star generations since the initial Big Bang event!
solar abundance distribution
The stellar abundance distribution is a reflection of nuclear structure and nuclear stability!
The electron capture at high densities results in lower Ye and generates neutrino wind which is necessary for driving the shock.
Hix, Messer, Mezzacappa, et al ‘03
Electron captures on nuclei dominate
Courtesy: Hans-Thomas Janka
Courtesy Hans-Thomas Janka
Neutrino reactions with nucleons
determine the proton-to-neutron
Courtesy: K.-L. Kratz
TRIUMF/ISAC future (2010-2018) ~100-1000 star generations since the initial Big Bang event!
New proton spallation beam line on UC
(p,)/()/(p,)/(,p) reactions for novae/XRB/SNII more power for spallation e.g. 18Ne(,p), 30P(p,), 25Al(p,), 17F(p,), 11C(p,), 13N(p,),,….
AND new target stations for more target & ion source development).
Photo-fission on U-target
Neutron-rich studies: (d,p) for (n,) using EMMA/TIGRESS/SHARC, TITAN mass measurements for Sn, Q and TIGRESS structure studies of r-process nuclei, N=82 closed shell.
3 RIB in parallel
New isotopes &
more target and source
RIKEN RI Beam Factory (RIBF) ~100-1000 star generations since the initial Big Bang event!
To be funded
In phase II
SHE (eg. Z=113)
World’s First and Strongest ~100-1000 star generations since the initial Big Bang event!
Superconducting Ring Cyclotron
400 MeV/u Light-ion beam
345 MeV/u Uranium beam
World’s Largest Acceptance
Superconducting RI beam Separator
~250-300 MeV/nucleon RIB
Intermediate stage Ring Cyclotron (IRC)
Search for new neutron-rich isotopes using a 345 ~100-1000 star generations since the initial Big Bang event! A MeV 238U beam
at the BigRIPS in-flight separator
The first half of BigRIPS (F0-F2) :
radioactive beam productions
The second half of BigRIPS (F3-F7):
particle identification of beams
in the Br-DE-TOF method
High resolution in A/Q determination
0.04% for Z=26.
How do supernovae explode?
Electron capture and beta decay rates play important role in
Core collapse supernovae
Dynamics of collapse
2.1. Energy in stellar explosions: Weak interactions in supernovae
Need data to constrain and develop nuclear theory
NSCL measurements by R. Zegers et al.
Asymmetry dependenceof fission barriers
(d,p) for (n,g)
NSCL experimentsincluding 78Ni
FRIB reach forb-decay properties
A colored dot means that the relevant nuclear data (mass, halflife, P(βn)) could be measured.
At present except in a few cases (blue) can output of models be matched to measured abundances.
The next generation exotic beam facilities will allow one to
Courtesy: Gabriel Martinez-Pinedo
Competition velocity of ejected matter vs. halflives ~100-1000 star generations since the initial Big Bang event!
IF halflives were known, strong constraint of matter ejection from neutron star surface!FAIR Chance: Role of Halflives
Neutron star surface ~100-1000 star generations since the initial Big Bang event!
n coolingFate of ashes on neutron star surface
106 ~100-1000 star generations since the initial Big Bang event! Pd
4.8 x 1011 g/cm3
1.8 x 1012 g/cm3
Increase with Z1Z2
2.5 x 1011 g/cm3
4.4 x 1012 g/cm3
1.5 x 1012 g/cm3
Ouellette, Gupta & Brown 2005
Haensel & Zdunik 1990, 2003
Beard & Wiescher 2003
Must be the hair and the beard!!