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NucleoSynthesis of Galactic 26 Al 25 Al+p Resonances Peter Parker, Yale University Catherine Deibel, Rachel Lewis, Anuj Parikh, Christopher Wrede Jac Caggiano, Jason Clark ORNL - 23 Oct.’06
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26 Al (1809 keV) map of our Galaxy GRO-Comptel
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(p, ) 26 Si( ) 26m Al( ) 26 Mg GS 24 Mg(p, ) 25 Al ( ) 25 Mg(p, ) 26 Al( ) 26* Mg( 26 Mg GS 25 Al Branch Point :
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25 Al(p, ) 26 Si Resonance Searches: 29 Si( 3 He, 6 He) 26 Si (Caggiano) 24 Mg( 3 He,n) 26 Si (Parpottas) 28 Si(p,t) 26 Si (Bardayan) [ 26 Al( 3 He,t) 26 Si(p) 25 Al ] (Yale) TRIUMF E1071 (C. Deibel) TRIUMF DRAGON E922 (A. Chen) Direct Measurement:
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29 Si( 3 He, 6 He) 27 Si ( Yale ): Caggiano, et al. Phys.Rev.C 65,055801(2002)
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24 Mg( 3 He,n) 26 Si ( Ohio Univ.): Parpottas, et al. Phys.Rev.C 70,065805(2004).
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28 Si(p,t) 26 Si ( ORNL ): Bardayan, et al. Phys.Rev.C 74,045804(2006).
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25 Al(p, ) 26 Si: Parpottas, et al. Phys.Rev.C 73,049907(E) (2006).
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26 Al Implanted Target : (TRIUMF-ISAC Proposal E1071) HRMS 4 10 10 26 Al/sec at an energy of 51 keV 10 17 26 Al/cm 2 rastered into a 3-mm diameter circle in 4 to 7 days, into a 40 μg/cm 2 carbon foil Contamination: About 1 to 10% 26 Na( - ) 26 Mg, But no 27 Al With this target, in conjunction with the Yale split-pole spectrograph and the YLSA silicon array, we project a 26 Al( 3 He,t) 26 Si * (p) 25 Al coincidence rate of 1/hour.
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500- thick Silicon 5 Sectors; 16 strips each Covering 131° lab 166° 80-energy and 80-time signals Yale LampShade Array - YLSA
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26 Al( 3 He,t) 26 Si*(p) 25 Al E YLSA vs. Focal Plane
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27 Al( 3 He,t) 27 Si*(p) 26 Al
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Yale – Nuclear Astrophysics Group Faculty and Post Doc: Peter Parker Jason Clark Current Graduate Students: Christopher Wrede (4 th year) Catherine Deibel (5 th year) Most Recent PhDs: Anuj Parikh (’06), PostDoc @ Barcelona Rachel Lewis (‘05), PostDoc @ Univ.of York Dale Visser (’03), Microsoft, Seattle Alan Chen (’00), Faculty @ McMaster Dan Bardayan (’99 DNP ), Wigner Fellow @ ORNL Recent PostDocs: Jac Caggiano @ Hanford Lab, Richland, WA Will Bradfield-Smith @ Univ.Western Ontario
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