کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10722805 | 1033800 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A step toward CNO solar neutrino detection in liquid scintillators
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A step toward CNO solar neutrino detection in liquid scintillators A step toward CNO solar neutrino detection in liquid scintillators](/preview/png/10722805.png)
چکیده انگلیسی
The detection of CNO solar neutrinos in ultrapure liquid scintillator detectors is limited by the background produced by bismuth-210 nuclei that undergo β-decay to polonium-210 with a lifetime of â¼7 days. Polonium-210 nuclei are unstable and decay with a lifetime equal to â¼200 days emitting α particles that can be also detected. In this Letter, we show that the Bi-210 background can be determined by looking at the time evolution of α-decay rate of Po-210, provided that α particle detection efficiency is stable over the data acquisition period and external sources of Po-210 are negligible. A sufficient accuracy can be obtained in a relatively short time. As an example, if the initial Po-210 event rate is â¼2000 cpd/100 ton or lower, a Borexino-like detector could start discerning CNO neutrino signal from Bi-210 background in Îtâ¼1 yr.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 701, Issue 3, 11 July 2011, Pages 336-341
Journal: Physics Letters B - Volume 701, Issue 3, 11 July 2011, Pages 336-341
نویسندگان
F.L. Villante, A. Ianni, F. Lombardi, G. Pagliaroli, F. Vissani,