Stellar <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>s</mml:mi></mml:math> -process neutron capture cross sections on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Kr</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>78</mml:mn><mml:mo>,</mml:mo><mml:mn>80</mml:mn><mml:mo>,</mml:mo><mml:mn>84</mml:mn><mml:mo>,</mml:mo><mml:mn>86</mml:mn></mml:mrow></mml:mmultiscripts></mml:math> determined via activation, atom trap trace analysis…
نویسندگان
چکیده
Understanding stellar $s$-process nucleosynthesis requires knowledge of neutron capture cross sections. In this work krypton gas is activated by an intense beam at energies. Applying for the first time atom-trap trace analysis (ATTA), long-lived reaction products are individually trapped and counted via fluorescence using cycling atomic transitions excited precisely tuned lasers. Absolute isotope production determined comparison with reference samples. Improved sections four isotopes, effect new values on relative abundances in medium- high-mass stars investigated.
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2021
ISSN: ['2470-0002', '2469-9985', '2469-9993']
DOI: https://doi.org/10.1103/physrevc.104.015806