1 / 7

Research: Stellar Burning – nuclear reactions with stable beams

Nuclear Astrophysics at NSL. Michael Wiescher. Research: Stellar Burning – nuclear reactions with stable beams Explosive Burning – nuclear studies beyond stability Achievements: Neutrino Sources, (Wiescher) Solar System characteristics (Collon)

shay
Download Presentation

Research: Stellar Burning – nuclear reactions with stable beams

An Image/Link below is provided (as is) to download presentation 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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Nuclear Astrophysics at NSL Michael Wiescher Research: Stellar Burning – nuclear reactions with stable beams Explosive Burning – nuclear studies beyond stability Achievements: Neutrino Sources, (Wiescher) Solar System characteristics (Collon) Galactic Radioactivities, (Collon, Wiescher) rp- and αp Processes, (Aprahamian, Wiescher) r- & p-Processes (Aprahamian, Wiescher) Goals: Neutron Sources (Couder, Wiescher) Helium & Carbon burning (Couder, Wiescher) Nova burning with SSNAP (Bardayan) rp- &αp Process with SSNAP & ANASEN (Bardayan, Wiescher r-process nuclei with traps (Aprahamian, Brodeur) ARUNA Meeting- June 12, 2014

  2. Achievements 2008-2013 Mapping the CNO cycle as solar neutrino source 12C(p,)13N, 14N(p,)15O, 15N(p,)16O, 17O(p,)18F Investigating pp-chain neutrino sources 3He(α,)7Be Closing in on neutron sources 22Ne(α,n) (via 26Mg(,’), 26Mg(α,α’), 22Ne(6Li,d) studies); 12C(12C,n)23Mg Solar System Radioactivity & Chronology 146Sm half life, 33S(α,p)36Cl The origins of Galactic Radioactivities 40Ca(α,)44Ti, 60Fe(n,)61Fe, 60Fe(,n)59Fe; first attempts of 60Fe life-time measurements Mapping the p-process proton and alpha radiative capture on neutron deficient medium mass isotopes Extensive modeling work in nuclear reaction cross sections (AZURE, SAPPHIRE, CIGAR) ARUNA Meeting- June 12, 2014

  3. Experimental complementarity with forward and inverse kinematics Heavy ion on light target with measurement of heavy ion recoil yield, limited by initial beam intensity and acceptance of recoil separator Light ion on heavy target with measurement of light reaction products, limited by solid angle and detection efficiency. ARUNA Meeting- June 12, 2014

  4. Projects for 2014-2017 4He(3He,7Be) at St. GEORGE 4He(14N,18F) calibration studies 4He(22Ne,26Mg) 4He(22Ne,25Mg)n and at CASPAR 4He(12C,16O) proposed experiments 12C+12C with SAND detector array 60Fe live time measurement with AMS and other experiments ARUNA Meeting- June 12, 2014

  5. Solar Neutrino Sources Theorist spectrum 3He(α,)7Be 17O(p,)18F BOREXINO spectrum: Reduction of 11C background will be necessary! 12C(p,)13N 14N(p,)15O New experimental data over wide energy range from ND & LUNA experiments, extrapolated by JINA R-matrix code AZURE Antonios Kontos, PhD 2012; Qian Li, PhD 2014 NSF Site Visit - February 11, 2014 ARUNA Meeting- June 12, 2014

  6. Future Goals in He burning 13C(α,n) with UMich detector & 22Ne(α,n) with St. GEORGE & CASPAR R-matrix (AZURE) preparation for 12C(α,)16O experiments! ARUNA Meeting- June 12, 2014

  7. New Equipment for new Initiatives Superconducting Solenoid for Nuclear Astrophysics: SSNAP New injection magnet for the FN ion source upgrade The upgrade of the injection system will achieve higher mass resolution for AMS of high Z isotopes; that is important for 60Fe life time analysis, p-process studies, and several other applications (Collon). To maximize the use of TWINSOL for the study of transfer reactions for quiescent and explosive stellar burning scenarios via the use of inflight radioactive beams and a new helical spectrometer (Bardayan). ARUNA Meeting- June 12, 2014

More Related