کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1823307 1526418 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Unfolding the response of a zero-degree magnetic spectrometer from measurements of the ΔΔ resonance
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
Unfolding the response of a zero-degree magnetic spectrometer from measurements of the ΔΔ resonance
چکیده انگلیسی

The magnetic spectrometer FRagment Separator at GSI has been used to investigate the in-medium ΔΔ-resonance excitation in peripheral heavy-ion reactions. The resolving power of this spectrometer makes it possible to disentangle the longitudinal-momentum loss induced by the excitation of the ΔΔ resonance in the projectile residues produced in isobaric charge-exchange collisions. However, beam emittance, electromagnetic interactions of projectile and residual nuclei in the target, and the accuracy of the tracking detectors limit the final resolution. The characterization of the ΔΔ resonance requires then to unfold the measured longitudinal-momentum distribution from the response of the spectrometer. In this work, we use an unfolding procedure based on the Richardson–Lucy method with a regularization technique to optimize the stability of the solution against statistical fluctuations. The method is validated using measurements of isobaric charge-changing collisions with a 136Xe beam at 500 A MeV.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 707, 11 April 2013, Pages 16–25
نویسندگان
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