نتایج جستجو برای: proportional counter

تعداد نتایج: 108353  

Journal: :Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 2001

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Journal: :Physics of Atomic Nuclei 2015

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Journal: :RADIOISOTOPES 2012

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Journal: :HNPS Proceedings 2019

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Journal: :RADIOISOTOPES 1997

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Journal: :Astrophysical Journal Supplement Series 2022

We present an improved background model for the Large Area X-ray Proportional Counter (LAXPC) detectors on-board AstroSat. Because of large collecting area and high pressure, LAXPC instrument has a count rate, which varies during orbit. Apart from variation with latitude longitude orbit there is prominent quasi-diurnal not been modelled earlier. Using over 5 years observations, we determined pe...

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1997
A. R. Rao

We present the time variability characteristics of Cygnus X-1 in its two spectral states. The observations were carried out using the Pointed Proportional Counters (PPC) onboard the IndianX-rayAstronomyExperiment (IXAE). The details of the instrument characteristics, the observation strategy, and the backgroundmodelingmethods are described. In the soft state ofCygX-1,we confirm the general tren...

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Journal: :EPJ Web of Conferences 2021

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2010

National Bureau of Standards Gaithersburg, MD 20899 Two alpha-particle counting systems for the measurement of large-area sources have been developed at the National Bureau of Standards. The systems and their characteristics are described. One system uses an internal-source proportional counter and the other measures sources external to the counting volume through a thin aluminized mylar window...

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Journal: :Physics of Particles and Nuclei 2015

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