I N S T I T U T E F O R S T R U C T U R E A N D N U C L E A R A S T R O P H Y S I C S

N U C L E A R S C I E N C E L A B O R A T O R Y

Research: Stellar Burning – nuclear reactions with stable beamsExplosive Burning – nuclear studies beyond

stabilityAchievements: 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)

Michael Wiescher

Nuclear Astrophysics at NSL

ARUNA Meeting- June 12, 2014

I N S T I T U T E F O R S T R U C T U R E A N D N U C L E A R A S T R O P H Y S I C S

N U C L E A R S C I E N C E L A B O R A T O R Y

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

I N S T I T U T E F O R S T R U C T U R E A N D N U C L E A R A S T R O P H Y S I C S

N U C L E A R S C I E N C E L A B O R A T O R Y

ARUNA Meeting- June 12, 2014

Experimental complementarity with forward and

inverse kinematicsLight ion on heavy target with measurement of light reaction products, limited by solid angle and detection efficiency.

Heavy ion on light target with measurement of heavy ion recoil yield, limited by initial beam intensity and acceptance of recoil separator

I N S T I T U T E F O R S T R U C T U R E A N D N U C L E A R A S T R O P H Y S I C S

N U C L E A R S C I E N C E L A B O R A T O R Y

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 AMSand other experiments

ARUNA Meeting- June 12, 2014

I N S T I T U T E F O R S T R U C T U R E A N D N U C L E A R A S T R O P H Y S I C S

N U C L E A R S C I E N C E L A B O R A T O R Y

NSF Site Visit - February 11, 2014

Solar Neutrino Sources

ARUNA Meeting- June 12, 2014

3He(α,)7Be

12C(p,)13N

14N(p,)15O

BOREXINO spectrum: Reduction of 11C background will be necessary!

Theorist spectrum

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

17O(p,)18F

I N S T I T U T E F O R S T R U C T U R E A N D N U C L E A R A S T R O P H Y S I C S

N U C L E A R S C I E N C E L A B O R A T O R Y

ARUNA Meeting- June 12, 2014

Future Goals in He burning13C(α,n) with UMich detector & 22Ne(α,n) with St. GEORGE & CASPAR

R-matrix (AZURE) preparation for 12C(α,)16O experiments!

I N S T I T U T E F O R S T R U C T U R E A N D N U C L E A R A S T R O P H Y S I C S

N U C L E A R S C I E N C E L A B O R A T O R Y

New Equipment for new Initiatives

ARUNA Meeting- June 12, 2014

Superconducting Solenoid for Nuclear Astrophysics: SSNAP

New injection magnet for the FN ion source upgrade

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).

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).