نتایج جستجو برای: gamma detector

تعداد نتایج: 178856  

2005
A. Rau A. v. Kienlin K. Hurley G. G. Lichti

We present the sample of gamma-ray bursts detected with the anti-coincidence shield ACS of the spectrometer SPI on-board INTEGRAL for the first 26.5 months of mission operation (up to Jan 2005). SPI-ACS works as a nearly omnidirectional gamma-ray burst detector above ∼80 keV but lacks spatial and spectral information. In this catalogue, the properties derived from the 50 ms light curves (e.g., ...

2008
E. Bissaldi A. von Kienlin G. Lichti H. Steinle P. N. Bhat M. S. Briggs G. J. Fishman A. S. Hoover R. M. Kippen M. Krumrey M. Gerlach V. Connaughton R. Diehl J. Greiner A. J. van der Horst C. Kouveliotou S. McBreen C. A. Meegan W. S. Paciesas R. D. Preece C. A. Wilson - Hodge

One of the scientific objectives of NASA’s Fermi Gamma-ray Space Telescope is the study of Gamma-Ray Bursts (GRBs). The Fermi Gamma-Ray Burst Monitor (GBM) was designed to detect and localize bursts for the Fermi mission. By means of an array of 12 NaI(Tl) (8 keV to 1 MeV) and two BGO (0.2 to 40 MeV) scintillation detectors, GBM extends the energy range (20 MeV to > 300 GeV) of Fermi’s main ins...

2002
Robert P. Johnson

The Large Area Telescope (LAT) on the Gamma-ray Large-Area Space Telescope (GLAST) mission is designed to provide unprecedented sensitivity in the exploration of the gamma-ray sky. Gamma rays with energy above 10 MeV are detected via the pair conversion process, using a precision silicon tracker-converter and a hodoscopic CsI calorimeter. Charged cosmic rays are rejected by a tiled plastic-scin...

Journal: :Radiation protection dosimetry 2014
Sascha Reinhardt

In environmental radiation monitoring, the time-variable natural gamma radiation background complicates the nuclide identification and analysis of a gamma spectrum. A full spectrum analysis based on the noise adjusted singular value decomposition method for the description of the time-variable background and adjustment calculations is a possible analysis method, which may provide advantages com...

Journal: :Physical review letters 2009
B Aubert Y Karyotakis J P Lees V Poireau E Prencipe X Prudent V Tisserand J Garra Tico E Grauges M Martinelli A Palano M Pappagallo G Eigen B Stugu L Sun M Battaglia D N Brown L T Kerth Yu G Kolomensky G Lynch I L Osipenkov K Tackmann T Tanabe C M Hawkes N Soni A T Watson H Koch T Schroeder D J Asgeirsson B G Fulsom C Hearty T S Mattison J A McKenna M Barrett A Khan A Randle-Conde V E Blinov A D Bukin A R Buzykaev V P Druzhinin V B Golubev A P Onuchin S I Serednyakov Yu I Skovpen E P Solodov K Yu Todyshev M Bondioli S Curry I Eschrich D Kirkby A J Lankford P Lund M Mandelkern E C Martin D P Stoker H Atmacan J W Gary F Liu O Long G M Vitug Z Yasin L Zhang V Sharma C Campagnari T M Hong D Kovalskyi M A Mazur J D Richman T W Beck A M Eisner C A Heusch J Kroseberg W S Lockman A J Martinez T Schalk B A Schumm A Seiden L Wang L O Winstrom C H Cheng D A Doll B Echenard F Fang D G Hitlin I Narsky T Piatenko F C Porter R Andreassen G Mancinelli B T Meadows K Mishra M D Sokoloff P C Bloom W T Ford A Gaz J F Hirschauer M Nagel U Nauenberg J G Smith S R Wagner R Ayad W H Toki R J Wilson E Feltresi A Hauke H Jasper T M Karbach J Merkel A Petzold B Spaan K Wacker M J Kobel R Nogowski K R Schubert R Schwierz A Volk D Bernard E Latour M Verderi P J Clark S Playfer J E Watson M Andreotti D Bettoni C Bozzi R Calabrese A Cecchi G Cibinetto E Fioravanti P Franchini E Luppi M Munerato M Negrini A Petrella L Piemontese V Santoro R Baldini-Ferroli A Calcaterra R de Sangro G Finocchiaro S Pacetti P Patteri I M Peruzzi M Piccolo M Rama A Zallo R Contri E Guido M Lo Vetere M R Monge S Passaggio C Patrignani E Robutti S Tosi K S Chaisanguanthum M Morii A Adametz J Marks S Schenk U Uwer F U Bernlochner V Klose H M Lacker D J Bard P D Dauncey M Tibbetts P K Behera M J Charles U Mallik J Cochran H B Crawley L Dong V Eyges W T Meyer S Prell E I Rosenberg A E Rubin Y Y Gao A V Gritsan Z J Guo N Arnaud J Béquilleux A D'Orazio M Davier D Derkach J Firmino da Costa G Grosdidier F Le Diberder V Lepeltier A M Lutz B Malaescu S Pruvot P Roudeau M H Schune J Serrano V Sordini A Stocchi G Wormser D J Lange D M Wright I Bingham J P Burke C A Chavez J R Fry E Gabathuler R Gamet D E Hutchcroft D J Payne C Touramanis A J Bevan C K Clarke F Di Lodovico R Sacco M Sigamani G Cowan S Paramesvaran A C Wren C L Davis A G Denig M Fritsch W Gradl A Hafner K E Alwyn D Bailey R J Barlow G Jackson G D Lafferty T J West J I Yi J Anderson C Chen A Jawahery D A Roberts G Simi J M Tuggle C Dallapiccola E Salvati S Saremi R Cowan D Dujmic P H Fisher S W Henderson G Sciolla M Spitznagel R K Yamamoto M Zhao P M Patel S H Robertson M Schram A Lazzaro V Lombardo F Palombo S Stracka J M Bauer L Cremaldi R Godang R Kroeger P Sonnek D J Summers H W Zhao M Simard P Taras H Nicholson G De Nardo L Lista D Monorchio G Onorato C Sciacca G Raven H L Snoek C P Jessop K J Knoepfel J M Losecco W F Wang L A Corwin K Honscheid H Kagan R Kass J P Morris A M Rahimi J J Regensburger S J Sekula Q K Wong N L Blount J Brau R Frey O Igonkina J A Kolb M Lu R Rahmat N B Sinev D Strom J Strube E Torrence G Castelli N Gagliardi M Margoni M Morandin M Posocco M Rotondo F Simonetto R Stroili C Voci P Del Amo Sanchez E Ben-Haim G R Bonneaud H Briand J Chauveau O Hamon Ph Leruste G Marchiori J Ocariz A Perez J Prendki S Sitt L Gladney M Biasini E Manoni C Angelini G Batignani S Bettarini G Calderini M Carpinelli A Cervelli F Forti M A Giorgi A Lusiani M Morganti N Neri E Paoloni G Rizzo J J Walsh D Lopes Pegna C Lu J Olsen A J S Smith A V Telnov F Anulli E Baracchini G Cavoto R Faccini F Ferrarotto F Ferroni M Gaspero P D Jackson L Li Gioi M A Mazzoni S Morganti G Piredda F Renga C Voena M Ebert T Hartmann H Schröder R Waldi T Adye B Franek E O Olaiya F F Wilson S Emery L Esteve G Hamel de Monchenault W Kozanecki G Vasseur Ch Yèche M Zito M T Allen D Aston R Bartoldus J F Benitez R Cenci J P Coleman M R Convery J C Dingfelder J Dorfan G P Dubois-Felsmann W Dunwoodie R C Field M Franco Sevilla A M Gabareen M T Graham P Grenier C Hast W R Innes J Kaminski M H Kelsey H Kim P Kim M L Kocian D W G S Leith S Li B Lindquist S Luitz V Luth H L Lynch D B Macfarlane H Marsiske R Messner D R Muller H Neal S Nelson C P O'Grady I Ofte M Perl B N Ratcliff A Roodman A A Salnikov R H Schindler J Schwiening A Snyder D Su M K Sullivan K Suzuki S K Swain J M Thompson J Va'vra A P Wagner M Weaver C A West W J Wisniewski M Wittgen D H Wright H W Wulsin A K Yarritu C C Young V Ziegler X R Chen H Liu W Park M V Purohit R M White J R Wilson P R Burchat A J Edwards T S Miyashita S Ahmed M S Alam J A Ernst B Pan M A Saeed S B Zain A Soffer S M Spanier B J Wogsland R Eckmann J L Ritchie A M Ruland C J Schilling R F Schwitters B C Wray B W Drummond J M Izen X C Lou F Bianchi D Gamba M Pelliccioni M Bomben L Bosisio C Cartaro G Della Ricca L Lanceri L Vitale V Azzolini N Lopez-March F Martinez-Vidal D A Milanes A Oyanguren J Albert Sw Banerjee B Bhuyan H H F Choi K Hamano G J King R Kowalewski M J Lewczuk I M Nugent J M Roney R J Sobie T J Gershon P F Harrison J Ilic T E Latham G B Mohanty E M T Puccio H R Band X Chen S Dasu K T Flood Y Pan R Prepost C O Vuosalo S L Wu

We present an analysis of the decays B{0}-->K{*0}(892)gamma and B{+}-->K{*+}(892)gamma using a sample of about 383 x 10{6} BB[-over ] events collected with the BABAR detector at the PEP-II asymmetric energy B factory. We measure the branching fractions B(B{0}-->K{*0}gamma)=(4.47+/-0.10+/-0.16) x 10{-5} and B(B{+}-->K{*+}gamma)=(4.22+/-0.14+/-0.16) x 10{-5}. We constrain the direct CP asymmetry ...

2017
Hesham A. Yousef

It is important to measure the bulk-etching rate for any solid state nuclear track detectors, because they have an application in different fields of sciences. The effect of gamma rays emitted from 60 Co source with different doses on LR-115 detector was studied. The bulk etching rate of the detectors was measured before and after irradiation using gamma source. From the results the values of t...

2007
Simonetta Gentile

The Alpha Magnetic Spectrometer (AMS-02) will be installed on the International Space Station (ISS). The gamma rays can be measured through gamma conversion into ee pair, before reaching the Silicon Tracker or by measurement of a photon hitting directly the Electromagnetic Calorimeter (ECAL). AMS-02 will provide precise gamma measurements in the GeV energy range, which is particularly relevant ...

2013
A. Amekudzie G. Emi-Reynolds A. Faanu E. O. Darko A. R. Awudu O. Adukpo A. Ibrahim

Radioactivity concentration of Naturally Occurring Radioactive Materials (NORMs) in shore sediments (samples) collected along the coast of Accra were analyzed using a gamma spectrometry with a high purity germanium detector. The specific activity concentrations range from 8.60 Bqkg to 61.01 Bqkg with a mean of 29.78 Bqkg for K, 0.62 Bqkg to 148.80 Bqkg with a mean of 22.04 Bqkg for Ra and 0.17 ...

ژورنال: سنجش و ایمنی پرتو 2020

The radioactive contamination measurement is essential in nuclear facilities. Monitoring of low level alpha and beta contamination is possible using light detectors high efficiency. Due to the fact that many detectors canchr('39')t simultaneously discriminate alpha, beta and gamma rays; among existing methods, phoswich detectors would be appropriate option to measure different radioactive conta...

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