کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1822011 1526298 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Single-shot positron annihilation lifetime spectroscopy with LYSO scintillators
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
Single-shot positron annihilation lifetime spectroscopy with LYSO scintillators
چکیده انگلیسی

We have evaluated the application of a lutetium yttrium oxyorthosilicate (LYSO) based detector to single-shot positron annihilation lifetime spectroscopy. We compare this detector directly with a similarly configured PbWO4 scintillator, which is the usual choice for such measurements. We find that the signal to noise ratio obtained using LYSO is around three times higher than that obtained using PbWO4 for measurements of Ps excited to longer-lived (Rydberg) levels, or when they are ionized soon after production. This is due to the much higher light output for LYSO (75% and 1% of NaI for LYSO and PbWO4 respectively). We conclude that LYSO is an ideal scintillator for single-shot measurements of positronium production and excitation performed using a low-intensity pulsed positron beam.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 828, 21 August 2016, Pages 163–169
نویسندگان
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