Results 11 to 20 of about 5,890,374 (272)

Experimental Measurements and Computer Simulation of Fission Product Gamma-Ray Spectra [PDF]

, 1997
Airborne gamma ray spectrometry using high volume scintillation detectors, optionally in conjunction with Ge detectors, has potential for making rapid environmental measurements in response to nuclear accidents. An experimental investigation and computer
Sanderson, D.C.W., McConville, P., Department of the Environment, Transport and the Regions: Radioactive Substances Division, Cresswell, A., Allyson, J.D.   +4 more
core   +8 more sources

An Aerial Gamma Ray Survey of the Surrounding Area of Sizewell Nuclear Power Station [PDF]

, 1997
<p>An airborne gamma ray survey of the surroundings of the Sizewell nuclear power station was conducted to define the present levels of radiation background for reference purposes. A twin engine helicopter fitted with a high volume NaI detector and
Sanderson, D.C.W., University of Glasgow: Scottish Universities Research and Reactor Centre, Cresswell, A., Allyson, J.D.   +3 more
core   +8 more sources

An Aerial Gamma Ray Survey of Torness Nuclear Power Station on 27-30 March 1994 [PDF]

, 1994
<p>An aerial gamma-ray survey of the environment of Torness Nuclear Power Station was commissioned by Scottish Nuclear Limited, and conducted by the Scottish Universities Research and Reactor Centre.
Murphy, S., Sanderson, D.C.W., Ni Riain, S., Gordon, G., University of Glasgow: Scottish Universities Research and Reactor Centre, Allyson, J.D., Fisk, S.   +6 more
core   +8 more sources

Gamma-ray all-sky imaging with the Burst and Transient Source Experiment [PDF]

Astronomy & Astrophysics, 2004
16 pages, 10 figures, accepted for publication in Astronomy and Astrophysics.
Shaw, SE, Westmore, AJ, Hill, AB, Bird, AJ, Dean, AJ, Ferguson, C, Knödlseder, J, Lockley, JJ, Willis, DR   +8 more
openaire   +3 more sources

A mass model for estimating the gamma ray background of the Burst and Transient Source Experiment [PDF]

Astronomy & Astrophysics, 2003
Orbiting x-ray and gamma ray instruments are subject to large background count rates due to local particle fluxes in the space environment. The ability of an instrument to make calibrated measurements of the flux from a source of interest is highly dependent on accurately determining the background level.
S. E. Shaw, M. J. Westmore, A. J. Bird, A. J. Dean, C. Ferguson, R. Gurriaran, J. J. Lockley, D. R. Willis   +7 more
openaire   +2 more sources

The HAWC Gamma-Ray Observatory: Sensitivity to Steady and Transient Sources of Gamma Rays

, 2013
The High-Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory is designed to record air showers produced by cosmic rays and gamma rays between 100 GeV and 100 TeV. Because of its large field of view and high livetime, HAWC is well-suited to measure gamma rays from extended sources, diffuse emission, and transient sources.
Collaboration, HAWC, Abeysekara, AU, Alfaro, R, Alvarez, C, Álvarez, JD, Arceo, R, Arteaga-Velázquez, JC, Solares, HA Ayala, Barber, AS, Baughman, BM, Bautista-Elivar, N, Belmont, E, BenZvi, SY, Berley, D, Rosales, M Bonilla, Braun, J, Caballero-Lopez, RA, Caballero-Mora, KS, Carramiñana, A, Castillo, M, Cotti, U, Cotzomi, J, Fuente, E de la, León, C De, DeYoung, T, Hernandez, R Diaz, Díaz-Vélez, JC, Dingus, BL, DuVernois, MA, Ellsworth, RW, Fernandez, A, Fiorino, DW, Fraija, N, Galindo, A, Garfias, F, González, LX, González, MM, Goodman, JA, Grabski, V, Gussert, M, Hampel-Arias, Z, Hui, CM, Hüntemeyer, P, Imran, A, Iriarte, A, Karn, P, Kieda, D, Kunde, GJ, Lara, A, Lauer, RJ, Lee, WH, Lennarz, D, Vargas, H León, Linares, EC, Linnemann, JT, Longo, M, Luna-GarcIa, R, Marinelli, A, Martinez, H, Martinez, O, Martínez-Castro, J, Matthews, JAJ, Miranda-Romagnoli, P, Moreno, E, Mostafá, M, Nava, J, Nellen, L, Newbold, M, Noriega-Papaqui, R, Oceguera-Becerra, T, Patricelli, B, Pelayo, R, Pérez-Pérez, EG, Pretz, J, Rivière, C, Rosa-González, D, Salazar, H, Salesa, F, Sanchez, FE, Sandoval, A, Santos, E, Schneider, M, Silich, S, Sinnis, G, Smith, AJ, Sparks, K, Springer, RW, Taboada, I, Toale, PA, Tollefson, K, Torres, I, Ukwatta, TN, Villaseñor, L, Weisgarber, T, Westerhoff, S, Wisher, IG, Wood, J, Yodh, GB, Younk, PW, Zaborov, D   +99 more
openaire   +4 more sources

An Aerial Gamma Ray Survey of Springfields and the Ribble Estuary in September 1992 [PDF]

, 1992
<p>A short aerial gamma ray survey was conducted in the vicinity of the Springfields site and Ribble Estuary from 1st-5th September 1992, to define existing background radiation levels, against which any future changes can be assessed.
Murphy, S., Sanderson, D.C.W., Tyler, A.N., University of Glasgow: Scottish Universities Research and Reactor Centre, Allyson, J.D.   +4 more
core   +8 more sources

Discovery of a transient MeV range gamma-ray source

The Astrophysical Journal, 1995
The University of California, San Diego (UCSD)/MIT hard X-ray and gamma-ray instrument on the HEAO 1 surveyed the region near the Galactic center 3 times during its lifetime in 1977-1979. During the 1977 September-October scan, a gamma-ray source was detected south of the Galactic center. The source was below the threshold sensitivity in the spring and
M. S. Briggs, D. E. Gruber, J. L. Matteson, L. E. Peterson   +3 more
openaire   +1 more source

Precise source location of the anomalous 1979 March 5 gamma-ray transient [PDF]

The Astrophysical Journal, 1982
Refinements in the source direction analysis of the observations of the unusual gamma ray transient are presented. The final results from the interplanetary gamma ray burst network produce a 0.1 arc sq. min. error box. It is nested inside the initially determined 2 arc sq min. source region. This smaller source location is within both the optical and X-
T. L. Cline, U. D. Desai, B. J. Teegarden, W. D. Evans, R. W. Klebesadel, J. G. Laros, C. Barat, K. Hurley, M. Niel, M. C. Weisskopf   +9 more
openaire   +1 more source

Variable optical/infrared counterpart to the transient gamma-ray source J0109+6134 [PDF]

Astronomy & Astrophysics, 2014
Context. We investigate the optical/infrared counterpart to the flaring gamma-ray source J0109+6134, which is believed to be a blazar seen through the Galactic plane.Aims. The original aim of this work was to confirm the previously proposed optical counterpart by means of studying its temporal behaviour.
E. Fernández-Valenzuela, J. Martí, P. L. Luque-Escamilla, A. J. Muñoz-Arjonilla, J. M. Paredes   +4 more
openaire   +1 more source