Feb 7 – 9, 2017
Radisson Hotel Lansing
US/Eastern timezone

Cross Section Measurements of the 12C(α, γ)16O Reaction at E_c.m. = 3.7, 4.0, and 4.2 MeV

Feb 7, 2017, 4:45 PM
1h 15m
Radisson Hotel Lansing

Radisson Hotel Lansing

111 N Grand Ave, Lansing, MI 48933
Poster [Main Conference] Poster session

Speaker

Rekam Giri (Ohio University, Athens, OH, USA)

Description

The 12C(α,γ)16O reaction is one of the most important nuclear reactions in astrophysics, as it determines the C/O ratio at the end of helium burning and it has a strong influence on the stellar evolution and final fate of red giant stars. We have used the DRAGON recoil separator for the measurements of the 12C(α,γ)16O reaction at the higher energies of E_c.m. = 3.7, 4.0, and 4.2 MeV. The measurements will constrain global R-Matrix fits by providing information on higher energy levels, aiding extrapolation to helium burning energies. The experiment was performed in inverse kinematics where a 12C beam was impinged on windowless He gas target surrounded by 30 BGO detectors which detect the γ-rays. The 16O recoils were detected by a Double-Sided Silicon Strip Detector (DSSSD) located at the end of the DRAGON separator. The array of BGO detectors is able to separate transitions to various 16O final states.

Primary author

Rekam Giri (Ohio University, Athens, OH, USA)

Co-authors

Dr A. Hussein (University of Northern British Columbia, Prince George, BC, Canada) Dr A. Lennarz (TRIUMF, Vancouver, BC, Canada) Dr B. Davids (TRIUMF, Vancouver, BC, Canada) Dr C. Ruiz (TRIUMF, Vancouver, BC, Canada) Dr Carl R. Brune (Ohio University, Athens, OH, USA) Dr D.A. Hutcheon (TRIUMF, Vancouver, BC, Canada) Dr D.S. Connolly (TRIUMF, Vancouver, BC, Canada) Dr G. Christian (Texas A&M University, College Station, TX, USA) Dr L. Martin (TRIUMF, Vancouver, BC, Canada) S.N. Paneru (Ohio University, Athens, OH, USA) Dr U. Greife (Colorado School of Mines, Golden, Co, USA) Dr U. Hager (Michigan State University, East Lansing, MI, USA)

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