Development of a honeycomb gas proportional counter array for photon multiplicity measurements in high multiplicity environment

Pramana ◽  
2003 ◽  
Vol 60 (5) ◽  
pp. 1023-1027
Author(s):  
M. M. Aggarwal ◽  
S. K. Badyal ◽  
V. S. Bhatia ◽  
S. Chattopadhyay ◽  
A. K. Dubey ◽  
...  
Keyword(s):  
Proportional Counter ◽  
High Multiplicity ◽  
Gas Proportional Counter ◽  
Proportional Counter Array ◽  
Photon Multiplicity

scholarly journals The X-Ray Timing Explorer

1990 ◽  
Vol 123 ◽  
pp. 89-110
Author(s):  
H. V. Bradt ◽  
A. M. Levine ◽  
E. H. Morgan ◽  
R. A. Remillard ◽  
J. H. Swank ◽  
...  
Keyword(s):  
Neutron Star ◽  
Neutron Stars ◽  
Active Galactic Nuclei ◽  
High Throughput ◽  
Proportional Counter ◽  
Galactic Nuclei ◽  
X Ray ◽  
Sky Monitor ◽  
Proportional Counter Array ◽  
Millisecond Timing

AbstractThe capabilities of the X-ray Timing Explorer (XTE) are described with particular attention paid to current scientific problems it will address from galactic neutron star systems to active galactic nuclei. It features a low-background continuous 2-200 keV response with large apertures (a 0.63-m2 proportional counter array and a 0.16-m2 dual rocking NaI/CsI scintillation array). Rapid response (in hours) to temporal phenomena, e.g. transients, is obtained by virtue of a scanning all-sky monitor and rapid maneuverability. XTE will carry out detailed energy-resolved studies of phenomena close to neutron stars (e.g. QPO’s) because of its sub-millisecond timing (to 10 μs), its high telemetry rates (to 256 kb/s), and the high throughput of its data system (to ≳ 2 × 105 c s−1).

scholarly journals Tata Institute Radiocarbon Date List II

Radiocarbon ◽  
1964 ◽  
Vol 6 ◽  
pp. 226-232 ◽  
Author(s):  
D. P. Agrawal ◽  
S. Kusumgar ◽  
D. Lal ◽  
R. P. Sarna
Keyword(s):  
Oxalic Acid ◽  
Proportional Counter ◽  
Half Life ◽  
Radiocarbon Date ◽  
Naoh Pretreatment ◽  
Tata Institute ◽  
Gas Proportional Counter ◽  
Inorganic Fraction

The C14 dates presented here have been obtained by counting acetylene, synthesised from the sample, in an Oeschger-Houtermans’ gas proportional counter. The chemical and counting procedures have been described in some detail (Kusumgar et al., 1963a).Dates are based on the C14 half-life value of 5568 yr. For conversion of b.p. dates to a.d./b.c. scale, a.d. 1950 has been taken as the reference yr. Ninety-five % activity of NBS oxalic acid has been adopted as the value for the pre-1900 age-corrected wood.All samples were treated with dilute HCl. Whenever NaOH pretreatment was possible, it has been mentioned in the date list. In the case of bones, only the inorganic fraction has been dated.

scholarly journals Comparison of Oceanic Δ14C Data with Those of GEOSECS: Vertical Profiles in 1973 (GEOSECS) and in 1980 at (30° N, 170° E) in the Northwestern Pacific Ocean

Radiocarbon ◽  
1987 ◽  
Vol 29 (1) ◽  
pp. 53-56 ◽  
Author(s):  
Toshitaka Gamo ◽  
Yoshio Horibe ◽  
Hiromi Kobayashi
Keyword(s):  
Proportional Counter ◽  
Vertical Profile ◽  
Sea Water ◽  
The Other ◽  
Northwestern Pacific ◽  
Vertical Profiles ◽  
Northwestern Pacific Ocean ◽  
Systematic Deviation ◽  
Gas Proportional Counter ◽  
Good Agreement

The vertical profile of radiocarbon at (30° N, 170° E) measured in 1980 was compared with the GEOSECS data measured in 1973. 14C was extracted from 200L of sea water, converted to C2H2, and analyzed with a gas proportional counter. Our profile and that of GEOSECS were in good agreement below 700m depth without systematic deviation of Δ14C values between both measurements. On the other hand, a Δ14C increase was observed above 700m depth, reflecting the transient addition, in 6.6 years, of bomb 14C to the intermediate layer from the atmosphere.

Laboratory performance of the proportional counter array experiment for the X-ray Timing Explorer

1993 ◽  
Author(s):  
William W. Zhang ◽  
Alan B. Giles ◽  
Keith Jahoda ◽  
Yang Soong ◽  
Jean H. Swank ◽  
...  
Keyword(s):  
Proportional Counter ◽  
Laboratory Performance ◽  
X Ray ◽  
Proportional Counter Array
Sign in / Sign up

Export Citation Format

Share Document