Precision Laboratory Measurements in Nuclear Astrophysics

Gai, M.

doi:10.1007/3-540-45371-7_2

From the Sun to the Great Attractor

2000

DOI: 10.1007/3-540-45371-7_2

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Precision Laboratory Measurements in Nuclear Astrophysics

M. Gai

Abstract: After reviewing some of the basic concepts, nomenclatures and parametrizations of Astronomy, Astrophysics and Cosmology, we introduce a few central problems in Nuclear Astrophysics, including the hot-CNO cycle, helium burning and solar neutrino's. We demonstrate that Secondary (Radioactive) Nuclear Beams allow for considerable progress on these problems.

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2006

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References 101 publications

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Optical Readout Time Projection Chamber (O-TPC) for a Study of Oxygen Formation in Stellar Helium Burning

Gai

Breskin

Chechik

et al. 2006

Acta Physica Hungarica A) Heavy Ion Physics

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We are developing an Optical Readout Time Projection Chamber (O-TPC) detector for the study of the 12ag reaction that determines the ratio of carbon to oxygen in helium burning. This ratio is crucial for understanding the final fate of a progenitor star and the nucleosynthesis of elements prior to a Type II supernova; an oxygen rich star is predicted to collapse to a black hole, and a carbon rich star to a neutron star. Type Ia supernovae (SNeIa) are used as standard candles for measuring cosmological distances with the use of an empirical light curve-luminosity stretching factor. It is essential to understand helium burning that yields the carbon/oxygen white dwarf and thus the initial stage of SNeIa. The O-TPC is intended for use with high intensity photon beams extracted from the HIγS/TUNL facility at Duke University to study the 16 O(γ, α) 12 C reaction, and thus the direct reaction at energies as low as 0.7 MeV. We are conducting a systematical study of the best oxygen containing gas with light emitting admixture(s) for use in such an O-TPC. Preliminary results with CO 2 + TEA mixture were obtained.

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Optical Readout Time Projection Chamber (O-TPC) for a Study of Oxygen Formation in Stellar Helium Burning

Gai

Breskin

Chechik

et al. 2006

Acta Physica Hungarica A) Heavy Ion Physics

Self Cite

View full text Add to dashboard Cite

show abstract

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Precision Laboratory Measurements in Nuclear Astrophysics

Cited by 1 publication

References 101 publications

Optical Readout Time Projection Chamber (O-TPC) for a Study of Oxygen Formation in Stellar Helium Burning

Optical Readout Time Projection Chamber (O-TPC) for a Study of Oxygen Formation in Stellar Helium Burning

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