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Nuclear Instruments and Methods最新文献

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Signal location by uniform resistive anodes 用均匀电阻阳极定位信号
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90760-6
G.W. Fraser , E. Mathieson
{"title":"Signal location by uniform resistive anodes","authors":"G.W. Fraser ,&nbsp;E. Mathieson","doi":"10.1016/0029-554X(81)90760-6","DOIUrl":"https://doi.org/10.1016/0029-554X(81)90760-6","url":null,"abstract":"<div><p>An account is given of the distortion, noise and resolution characteristics of uniform circular resistive anode encoders operated in the limit of vanishing capacitance.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 537-542"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90760-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136556390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of residual thermoluminescence on the radiation induced sensitization of some TL phosphors 残余热释光对某些TL荧光粉辐射致敏的影响
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90762-X
Bhuwan Chandra, R.C. Bhatt, S.J. Supe
{"title":"Effect of residual thermoluminescence on the radiation induced sensitization of some TL phosphors","authors":"Bhuwan Chandra,&nbsp;R.C. Bhatt,&nbsp;S.J. Supe","doi":"10.1016/0029-554X(81)90762-X","DOIUrl":"10.1016/0029-554X(81)90762-X","url":null,"abstract":"<div><p>The effect of the high temperature residual TL (RTL) peak on the sensitization of the dosimetric peak in CaSO<sub>4</sub> : Dy, CaSO<sub>4</sub> : Tm and CaF<sub>2</sub> : Dy phorphors was studied and it was found that the sensitization factor (<em>S</em>/<em>S</em><sub>0</sub>) is dependent on the intensity of the RTL peak. On bleaching the RTL peak intensity by a factor of ∼16 by means of intense UV irradiation (253.7 nm), it was possible to bring down the sensitization factor for CaSO<sub>4</sub> : Dy from a value of 2.6 to 1.0. A similar effect has also been observed in CaSO<sub>4</sub> : Tm and CaF<sub>2</sub> : Dy phosphors. The shape and also the position of the main dosimetric peak is dependent on the intensity of the RTL peak.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 549-555"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90762-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85986438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Some notes on peak fitting with an inadequate model in the analysis of Ge(Li) gamma spectra 锗(锂)γ谱分析中用不适当模型拟合峰值的若干注意事项
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90752-7
Vladimir Pavlovič Kuznecov
{"title":"Some notes on peak fitting with an inadequate model in the analysis of Ge(Li) gamma spectra","authors":"Vladimir Pavlovič Kuznecov","doi":"10.1016/0029-554X(81)90752-7","DOIUrl":"10.1016/0029-554X(81)90752-7","url":null,"abstract":"<div><p>An exact expression for a covariance matrix of estimates is obtained in cases of peak fitting with an inadequate model. Estimate biases are discussed.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 493-495"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90752-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80835867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Filtering of elastically scattered neutrons by statistical chopper at pulsed neutron sources 脉冲中子源中统计斩波器对弹性散射中子的滤波
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90743-6
L. Cser, F. Ferenczy, N. Kroó, Gy. Rubin, G. Zsigmond, V.G. Simkin
{"title":"Filtering of elastically scattered neutrons by statistical chopper at pulsed neutron sources","authors":"L. Cser,&nbsp;F. Ferenczy,&nbsp;N. Kroó,&nbsp;Gy. Rubin,&nbsp;G. Zsigmond,&nbsp;V.G. Simkin","doi":"10.1016/0029-554X(81)90743-6","DOIUrl":"10.1016/0029-554X(81)90743-6","url":null,"abstract":"<div><p>Elastic spectrum filtering of scattered neutrons is described at the two-dimensional correlation spectrometer on the IBR-30 pulsed reactor in Dubna. Illustrative time-of-flight scattering spectra are shown.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 431-437"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90743-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81534874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Measurement of secondary neutron fluxes around beam stop for 500 MeV protons 500 MeV质子束流停止处二次中子通量的测量
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90739-4
Syuichi Ban, Hideo Hirayama, Kazuaki Katoh
{"title":"Measurement of secondary neutron fluxes around beam stop for 500 MeV protons","authors":"Syuichi Ban,&nbsp;Hideo Hirayama,&nbsp;Kazuaki Katoh","doi":"10.1016/0029-554X(81)90739-4","DOIUrl":"10.1016/0029-554X(81)90739-4","url":null,"abstract":"<div><p>Secondary neutron fluxes were measured around the beam stop bombarded by 500 MeV protons using activation detectors. The attenuation length of concrete was obtained for angles between 0° and 100°. To compare with experimental results, Monte Carlo transport calculations were performed using the NMTC code.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 409-412"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90739-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79444068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
A nuclear reaction product mass spectrometer 核反应产物质谱仪
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90742-4
T.M. Cormier, P.M. Stwertka
{"title":"A nuclear reaction product mass spectrometer","authors":"T.M. Cormier,&nbsp;P.M. Stwertka","doi":"10.1016/0029-554X(81)90742-4","DOIUrl":"10.1016/0029-554X(81)90742-4","url":null,"abstract":"<div><p>The design of a mass spectrometer capable of determining directly the mass of nuclear reaction products, independent of the velocity with which they leave the target, is discussed. The spectrometer employs only electric and magnetic dipoles and magnetic quadrupoles to focus all particles of a given mass to the same point on the focal plane. The usable solid angle is a function of the mass resolution and can be as large as 5 msr. The magnification of the device is 3.3 which means that the angular convergence of particle paths at the focal plane is very small with the consequence that the focal plane may, without significant loss of resolution be regarded as straight and perpendicular to the particle path in all practical cases. The mass dispersion of the spectrometer is ∼13 mm/% and the resolving power (a function of solid angle) can be as large as <em>m</em>/<em>Δm</em> = 400.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 423-430"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90742-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80062104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 38
Proton beam profile measurements with synchrotron light 用同步加速器测量质子束轮廓
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90734-5
R. Bossart, J. Bosser, L. Burnod, E. D'Amico, G. Ferioli, J. Mann, F. Méot
{"title":"Proton beam profile measurements with synchrotron light","authors":"R. Bossart,&nbsp;J. Bosser,&nbsp;L. Burnod,&nbsp;E. D'Amico,&nbsp;G. Ferioli,&nbsp;J. Mann,&nbsp;F. Méot","doi":"10.1016/0029-554X(81)90734-5","DOIUrl":"10.1016/0029-554X(81)90734-5","url":null,"abstract":"<div><p>In circular proton accelerators, the synchrotron radiation emitted by high energy beams at the edges of bending magnets contains an appreciable amount of visible light. This effect is used in the CERN SPS to measure by a non interceptive method the transverse proton density distribution above 200 GeV. The device consists of a telescope followed by an image sensor and electronics processing; its performances and some examples of applications are given in this paper.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 349-357"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90734-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91177623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
Performance of a scintillator glass shower detector for 20–120 MeV electrons 20 - 120mev电子闪烁玻璃淋浴探测器的性能
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90737-0
Masaaki Kobayashi, Yoshio Yoshimura, Masami Chiba, Jun'ichiro Iwahori, Hajime Yoshida
{"title":"Performance of a scintillator glass shower detector for 20–120 MeV electrons","authors":"Masaaki Kobayashi,&nbsp;Yoshio Yoshimura,&nbsp;Masami Chiba,&nbsp;Jun'ichiro Iwahori,&nbsp;Hajime Yoshida","doi":"10.1016/0029-554X(81)90737-0","DOIUrl":"10.1016/0029-554X(81)90737-0","url":null,"abstract":"<div><p>A scintillator glass (type : SCG1B) detector of 14 × 14 × 40 cm<sup>3</sup> gives an energy resolution (fwhm) of <span><math><mtext>6.5%/E</mtext><msup><mi></mi><mn><mtext>−1</mtext><mtext>2</mtext></mn></msup></math></span> for low energy electrons, which is better than for lead glass by a factor approximately 0.6. The light yield for SCG1B is 3.4 times that for lead glass (SF5) if the blocks have similar dimensions. Different surface textures are also compared.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 399-404"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90737-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83749589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
A new ratemeter concept for radiation measuring instruments 辐射测量仪器的新速率计概念
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90759-X
R.M. Longden-Thurgood, J. Pople
{"title":"A new ratemeter concept for radiation measuring instruments","authors":"R.M. Longden-Thurgood,&nbsp;J. Pople","doi":"10.1016/0029-554X(81)90759-X","DOIUrl":"10.1016/0029-554X(81)90759-X","url":null,"abstract":"<div><p>We describe an analogue electronic (ANELEC) ratemeter which has been designed to replace electromechanical ratemeters and to provide a probe-mounted ratemeter display for use with radiation detectors and portable radiation measuring instruments.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 533-536"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90759-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78332716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Digitization errors using digital charge division positionsensitive detectors 数字式电荷分割位置敏感探测器的数字化误差
Nuclear Instruments and Methods Pub Date : 1981-06-01 DOI: 10.1016/0029-554X(81)90750-3
R. Berliner, D.F.R. Mildner, O.A. Pringle
{"title":"Digitization errors using digital charge division positionsensitive detectors","authors":"R. Berliner,&nbsp;D.F.R. Mildner,&nbsp;O.A. Pringle","doi":"10.1016/0029-554X(81)90750-3","DOIUrl":"10.1016/0029-554X(81)90750-3","url":null,"abstract":"<div><p>The data acquisition speed and electronic stability of a charge division position-sensitive detector may be improved by using digital signal processing with a table look-up high speed multiply to form the charge division quotient. This digitization process introduces a positional quantization difficulty which reduces the detector position sensitivity. The degree of the digitization error is dependent on the pulse height spectrum of the detector and on the resolution or dynamic range of the system analog-to-digital converters. The effects have been investigated analytically and by computer simulation. The optimum algorithm for position sensing determination using 8-bit digitization and arithmetic has a digitization error of less than 1%.</p></div>","PeriodicalId":100971,"journal":{"name":"Nuclear Instruments and Methods","volume":"184 2","pages":"Pages 477-486"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0029-554X(81)90750-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84809308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
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