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KeV Astrophysics with GeV Beams; Blazing a New Trail on the Summit of Nuclear Astrophysics

机译:kev天体物理学与gev梁;在核天体物理学峰会上燃烧着新的踪迹

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GeV beams of light ions and electrons are used for creating a high flux of real and virtual photons, with which some problems in Nuclear Astrophysics are studied. GeV ~8B beams are used to study the Coulomb dissociation of ~8B and thus the ~7Be(p,γ)~8B reaction. This reaction is one of the major source of uncertainties in estimating the ~8B solar neutrino flux and a critical input for calculating the ~8B solar neutrino flux. The Coulomb dissociation of ~8B appears to provide a viable method for measuring the ~7Be(p,γ)~8B reaction rate, with a weighted average of the RIKEN1, RIKEN2, GSI1 and MSU published results of S_(17)(0) = 18.9 +- 1.0 eV-b. This result, however, does not include a theoretical error estimated to be +-10%. GeV electron beams on the other hand, are used to create a high flux of real and virtual photons at TUNL-HIGS and MIT-Bates, respectively, and we discuss two new proposals to study the ~(12)C(α,γ)~(16)O reaction with real and virtual photons. The ~(12)C(α,γ)~(16)O reaction is essential for understanding Type II and Type Ia supernova. It is concluded that virtual and real photons produced by GeV light ions and electron beams are useful for studying some problems in Nuclear Astrophysics.
机译:光离子和电子的GEV光束用于产生高通量的真实和虚拟光子,研究了核天体物理学的一些问题。 GEV〜8b光束用于研究〜8b的库仑解离,从而研究〜7be(p,γ)〜8b反应。该反应是估计〜8B太阳能磁通量的不确定因素之一,以及用于计算〜8B太阳能助熔剂的关键输入。 〜8b的库仑解离〜8b提供了一种用于测量〜7be(p,γ)〜8b反应速率的可行方法,具有riken1,riken2,gsi1和MSU的S_(17)(0)的发表结果的加权平均值= 18.9 + - 1.0 ev-b。然而,此结果不包括估计为+ -10%的理论误差。另一方面,GEV电子束,用于分别在Tunl-Higs和MIT-Bates上创建高通量的真实和虚拟光子,并且我们讨论了研究〜(12)C(α,γ)的两个新提案〜(16)与实际和虚拟光子的反应。 〜(12)C(α,γ)〜(16)O反应对于理解II型和IA型超新星至关重要。得出结论,由GEV光离子和电子束产生的虚拟和真实光子可用于研究核天体物理学的一些问题。

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