کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1852410 1033980 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nuclear excitation by electron capture followed by fast x-ray emission
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Nuclear excitation by electron capture followed by fast x-ray emission
چکیده انگلیسی

The resonance strength of the two-step process of nuclear excitation by electron capture followed by γ decay of the nucleus can be significantly increased in highly charged ions if the resonant capture proceeds via an excited electronic state with subsequent fast x-ray emission. For fully ionized 23892U and 23290Th, the x-ray decay stabilizes the system against internal conversion of the captured electron, with an increase of both nuclear lifetimes and resonance strengths of up to two orders of magnitude compared with the case when occupied atomic orbitals prevent the x-ray de-excitation. Applications of this effect to the measurement of the not yet experimentally observed nuclear excitation by electron capture and to dense astrophysical plasmas are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 661, Issue 4, 27 March 2008, Pages 330–334
نویسندگان
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