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Nuclear Instruments and Methods in Physics Research最新文献

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Comments on the application of two formulae in nuclear reaction kinematics 两个公式在核反应运动学中的应用
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91363-2
Xi-Ting Lu
{"title":"Comments on the application of two formulae in nuclear reaction kinematics","authors":"Xi-Ting Lu","doi":"10.1016/0167-5087(84)91363-2","DOIUrl":"10.1016/0167-5087(84)91363-2","url":null,"abstract":"<div><p>The error resulting from a commonly used formula in nuclear reaction kinematics is pointed out in this paper.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Pages 283-284"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91363-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82543810","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: 1
Gamma spectroscopy at high counting rates with large volume germanium detectors 高计数率的伽马光谱与大体积锗探测器
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91346-2
Nello Taccetti
{"title":"Gamma spectroscopy at high counting rates with large volume germanium detectors","authors":"Nello Taccetti","doi":"10.1016/0167-5087(84)91346-2","DOIUrl":"10.1016/0167-5087(84)91346-2","url":null,"abstract":"<div><p>The energy resolution and the throughput rate of a quasi-trapezoidal filter, based on a modified version of the DL-RC circuit, have been studied as a function of the counting rate up to ∼10<sup>5</sup> counts per second.</p><p>The performance of the modified DL-RC circuit is compared with that of a semi-Gaussian active filter and that of a quasi-trapezoidal gated integrator.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Pages 118-121"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91346-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85315499","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: 3
Energetic ion composition in the Earth's magnetosphere 地球磁层中的高能离子组成
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91367-X
Hannu Koskinen
{"title":"Energetic ion composition in the Earth's magnetosphere","authors":"Hannu Koskinen","doi":"10.1016/0167-5087(84)91367-X","DOIUrl":"10.1016/0167-5087(84)91367-X","url":null,"abstract":"","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Page 291"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91367-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73404850","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: 19
A balloon-borne high-resolution spectrometer for observations of gamma-ray emission from solar flares 用于观测太阳耀斑伽玛射线发射的气球载高分辨率光谱仪
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91358-9
C.J. Crannell, R. Starr, A.R. Stottlemyer, J.I. Trombka
{"title":"A balloon-borne high-resolution spectrometer for observations of gamma-ray emission from solar flares","authors":"C.J. Crannell,&nbsp;R. Starr,&nbsp;A.R. Stottlemyer,&nbsp;J.I. Trombka","doi":"10.1016/0167-5087(84)91358-9","DOIUrl":"10.1016/0167-5087(84)91358-9","url":null,"abstract":"<div><p>The design, development, and balloon-flight verification of a payload for observations of gamma-ray emission from solar flares are reported here. The payload incorporates a high-purity germanium semiconductor detector, standard NIM and CAMAC electronics modules, a thermally stabilized pressure housing, and regulated battery power supplies. The flight system is supported on the ground with interactive data-handling equipment comprised of similar electronics hardware. The modularity and flexibility of the payload, together with the resolution and stability obtained throughout a 30 h flight, make it readily adaptable for high-sensitivity, long-duration balloon flight applications.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Pages 195-208"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91358-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89866039","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
42 MeV bremsstrahlung spectrum analysis by a photoactivation method 光活化法分析42兆电子伏轫致辐射谱
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91360-7
Alfonso Calzado , Eliseo Vañó , Victor Delgado , Luciano González
{"title":"42 MeV bremsstrahlung spectrum analysis by a photoactivation method","authors":"Alfonso Calzado ,&nbsp;Eliseo Vañó ,&nbsp;Victor Delgado ,&nbsp;Luciano González","doi":"10.1016/0167-5087(84)91360-7","DOIUrl":"10.1016/0167-5087(84)91360-7","url":null,"abstract":"<div><p>The evaluation of 42 MeV bremsstrahlung spectra from a clinical betatron by using the photoactivation method is described. Photonuclear reactions, mainly of the (γ, n) type, are used as activation detectors. After measurements of photon-induced activities from residual nuclei are performed, the spectral distribution of photons is evaluated by solving the unfolding problem. The latter is carried out through the use of two independent methods, orthonormal expansion and Monte Carlo. In both cases prior conditions to the solution are imposed. Spectra evaluated by both methods and making use of two different size flattening filters are presented. An empirical method to estimate the “effective” thickness of the Pt target is described.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Pages 232-239"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91360-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78527487","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: 3
Effect of the Mott cross section on charge identification in the HEAO-3 heavy cosmic ray experiment Mott截面对HEAO-3重宇宙射线实验中电荷识别的影响
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91357-7
J.H. Derrickson, P.B. Eby, J.W. Watts Jr.
{"title":"Effect of the Mott cross section on charge identification in the HEAO-3 heavy cosmic ray experiment","authors":"J.H. Derrickson,&nbsp;P.B. Eby,&nbsp;J.W. Watts Jr.","doi":"10.1016/0167-5087(84)91357-7","DOIUrl":"10.1016/0167-5087(84)91357-7","url":null,"abstract":"<div><p>Corrections to the Z<sup>2</sup> dependence of ion chamber and Cherenkov response due to the Mott cross section are calculated for the HEAO-3 Heavy Cosmic Ray Experiment. The effect of the production and escape of high energy secondary electrons on detector response is accounted for by numerical calculations. These secondary electron effects are shown to influence the size of the non-Z<sup>2</sup> effects and thus affect the charge-assignments and detector resolution. The Bloch and relativistic Bloch corrections are not included in the results presented here but may be combined with the Mott corrections when the Bloch corrections are properly evaluated.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Pages 185-194"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91357-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72438473","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
Conceptual design for a high resolution high rate vertex detector for charm and beauty experiments using scintillating fibre optics 用于魅力和美容实验的高分辨率高速率顶点检测器的概念设计
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91330-9
M. Atkinson, D. Crennell, C. Fisher, N. Kurtz
{"title":"Conceptual design for a high resolution high rate vertex detector for charm and beauty experiments using scintillating fibre optics","authors":"M. Atkinson,&nbsp;D. Crennell,&nbsp;C. Fisher,&nbsp;N. Kurtz","doi":"10.1016/0167-5087(84)91330-9","DOIUrl":"10.1016/0167-5087(84)91330-9","url":null,"abstract":"<div><p>A vertex detector is proposed for charm and beauty experiments using a simple arrangement of scintillating optical fibres to provide high resolution (∼10 <em>μ</em>m) in a plane transverse to the event axis. Experience with the high resolution bubble chambers shows that this is optimal for the detection of heavy flavour decays in complex events. The aim is to provide a high rate triggerable charm/beauty track and vertex detector for fixed target or collider experiments.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Pages 1-7"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91330-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81529172","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
Simulation of HgI2 semiconductor detectors by a Monte Carlo method 用蒙特卡罗方法模拟HgI2半导体探测器
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91350-4
C. Manfredotti, U. Nastasi
{"title":"Simulation of HgI2 semiconductor detectors by a Monte Carlo method","authors":"C. Manfredotti,&nbsp;U. Nastasi","doi":"10.1016/0167-5087(84)91350-4","DOIUrl":"10.1016/0167-5087(84)91350-4","url":null,"abstract":"<div><p>A Monte Carlo program has been developed to simulate the γ-ray spectral response of semiconductor detectors. Calculations have been carried out for HgI<sub>2</sub>. Photons in the range from 5 keV to 1 MeV are considered as emitted from a source of zero thickness aligned to the crystal axis and followed until their complete energy loss of their escape from the crystal. The program allows the optimization of important parameters in a semiconductor detector, the study of their influence on the spectra obtained and the determination of performance parameters, such as energy resolution and efficiency. Some results have been compared with experimental data.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Pages 138-144"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91350-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81637682","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: 9
Position sensitive and Bragg curve spectroscopy detector system 位置敏感和布拉格曲线光谱检测系统
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91337-1
Arialdo Moroni , Ileana Iori , Li Zu Yu , Gianfranco Prete , Giuseppe Viesti , Fabiana Gramegna , Antonio Dainelli
{"title":"Position sensitive and Bragg curve spectroscopy detector system","authors":"Arialdo Moroni ,&nbsp;Ileana Iori ,&nbsp;Li Zu Yu ,&nbsp;Gianfranco Prete ,&nbsp;Giuseppe Viesti ,&nbsp;Fabiana Gramegna ,&nbsp;Antonio Dainelli","doi":"10.1016/0167-5087(84)91337-1","DOIUrl":"10.1016/0167-5087(84)91337-1","url":null,"abstract":"<div><p>A heavy ion gas detector system consisting of a Bragg-curve spectroscopy ionization chamber for particle identification and a multiwire proportional chamber as position sensitive fast trigger device is described. The Bragg IC has been tested with several beams up to <em>Z</em> = 36 to investigate some aspects of the BCS method. Results are reported on energy resolution and linearity, <em>Z</em> resolving power and mass sensitivity. The energy resolution is well below 1%. The Bragg-peak amplitude is fairly independent of the energy in a wide energy range and single elements are identified up to <em>Z</em> = 38 with a resolving power <em>Z</em>/<em>ΔZ</em> − 50-80. Isotope identification by range measurement is limited by the straggling in the ionization process and the mass resolving power is <em>M</em>/<em>ΔM</em> ∼ 20–26 for S and Si isotopes. The MWPC allows subnanosecond time resolution and position identification along the in-plane coordinate within ±0.5 mm.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Pages 57-64"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91337-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89807292","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: 28
Fitting of exponentials 指数拟合
Nuclear Instruments and Methods in Physics Research Pub Date : 1984-08-01 DOI: 10.1016/0167-5087(84)91365-6
B. Potschwadek
{"title":"Fitting of exponentials","authors":"B. Potschwadek","doi":"10.1016/0167-5087(84)91365-6","DOIUrl":"10.1016/0167-5087(84)91365-6","url":null,"abstract":"<div><p>Partial summation is a very efficient method in curve fitting.</p></div>","PeriodicalId":100972,"journal":{"name":"Nuclear Instruments and Methods in Physics Research","volume":"225 1","pages":"Page 288"},"PeriodicalIF":0.0,"publicationDate":"1984-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-5087(84)91365-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84206613","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: 1
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