Large-area proportional detectors

1968 ◽  
Vol 46 (10) ◽  
pp. S1125-S1127
Author(s):  
F. Ashton ◽  
R. B. Coats ◽  
G. N. Kelly ◽  
D. A. Simpson ◽  
N. I. Smith ◽  
...  
Keyword(s):  
Chord Length ◽  
Internal Diameter ◽  
Large Area ◽  
Emitter Follower ◽  
Methane Gas ◽  
Proportional Counters

The relative merits of using scintillation counters or proportional counters in a very large area (~100 m2) telescope to search for a flux of relativistic quarks are considered. It is shown that proportional counters are more satisfactory for large-area detectors and that counters 10 m long and 14.5 cm in internal diameter filled with 90% argon, 10% methane gas should give a signal of ~2 mV at the input to an emitter follower on the passage of a relativistic e/3 quark along an average chord length.

scholarly journals X-Ray Astronomy Satellite Ginga

1990 ◽  
Vol 123 ◽  
pp. 41-48
Author(s):  
F. Makino
Keyword(s):  
Gamma Ray ◽  
Effective Area ◽  
X Rays ◽  
Scientific Instruments ◽  
Large Area ◽  
Gamma Ray Burst ◽  
X Ray ◽  
Proportional Counters ◽  
Main Instrument

AbstractThe X-ray astronomy satellite Ginga carries three scientific instruments, the Large Area proportional Counters (LAC), All Sky X-ray Monitor (ASM) and Gamma-ray Burst Detector (GBD). The LAC is the main instrument with an effective area of 4000 cm2 giving it the highest sensitivity to hard X-rays so far achieved. Ginga observed about 250 targets up to the end of 1989.

Large Area Beryllium Proportional Counters

1970 ◽  
Vol 17 (1) ◽  
pp. 97-101 ◽  
Author(s):  
H. Tananbaum ◽  
E. M. Kellogg
Keyword(s):  
Large Area ◽  
Proportional Counters

Axel: A Balloon-borne X-ray Astronomy Experiment

1996 ◽  
Vol 13 (2) ◽  
pp. 156-161 ◽  
Author(s):  
R. K. Sood ◽  
J. Panettieri ◽  
D. Grey ◽  
G. Woods ◽  
J. Hoffmann ◽  
...  
Keyword(s):  
High Pressure ◽  
Large Area ◽  
X Ray ◽  
Ultra High Pressure ◽  
Successful Program ◽  
Proportional Counters ◽  
Experimental Laboratory ◽  
Scintillator Detector

AbstractFollowing a successful program to investigate the physics of ultra-high-pressure proportional counters, a counter array has been developed for hard X-ray astronomy. A parallel investigation has evaluated the performance of a large-area phoswich scintillator detector for the same purpose. The two detectors have been integrated in a balloon-borne payload, the Astrophysical X-ray Experimental Laboratory (AXEL). This paper describes the instrumentation aboard the payload.

scholarly journals Observations of Compact X-Ray Sources

1986 ◽  
Vol 89 ◽  
pp. 198-221
Author(s):  
Y. Tanaka
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Energy Spectrum ◽  
Energy Resolution ◽  
Compact Object ◽  
Radiation Hydrodynamics ◽  
Large Area ◽  
X Ray ◽  
Yield Information ◽  
Proportional Counters

This paper reviews the present status of observations of compact X-ray sources with emphasis on the aspects related to radiation hydrodynamics, based on the recent observational results, in particular those from the Japanese X-ray astronomy satellite Tenma. The main feature of Tenma is a large-area gas scintillation proportional counters (GSPC) with energy resolution twice that of ordinary proportional counters, which can yield information on energy spectrum superior in quality to previous results. We shall deal here only with those galactic X-ray sources in which the compact object is a neutron star or possibly a black hole, and exclude white dwarf sources.There exist more than one hundred bright X-ray sources in our galaxy in the luminosity range 1036−1038 ergs/sec. They are most probably binaries involving a neutron star or, in some cases, possibly a black hole. The high luminosities of these sources are explained in terms of the large gravitaional energy release by matter accreting from the companion star to the compact object.

scholarly journals Performance of large area x-ray proportional counters in a balloon experiment

2016 ◽  
Vol 42 (2) ◽  
pp. 249-270 ◽  
Author(s):  
J. Roy ◽  
P. C. Agrawal ◽  
D. K. Dedhia ◽  
R. K. Manchanda ◽  
P. B. Shah ◽  
...  
Keyword(s):  
Large Area ◽  
X Ray ◽  
Proportional Counters ◽  
Balloon Experiment ◽  
Area X
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