International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements最新文献

{"title":"Tracks in glasses from fission fragments with fixed parameters","authors":"V.A. Nikolaev,&nbsp;A.F. Belyaev,&nbsp;M.V. Demichev,&nbsp;V.I. Kogan,&nbsp;V.E. Kopchenov","doi":"10.1016/1359-0189(92)90008-J","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90008-J","url":null,"abstract":"<div><p>Sodium silicate and phosphate glasses were irradiated on a mass seperator of fission fragments which enabled separation of fragments with strictly fixed parameters (<em>E, M, Z</em>_eff) and the change of only one parameter while the two others remained fixed. The following conclusions were drawn from the results of the measurements made: the diameter in the first two stages of etching is determined by the fragment's d<em>E</em>/d<em>x</em>, and in the third stage also by the length of the radiation damage zone; the main parameter of a fragment, influencing the track diameter, is its speed.</p><p>To explain the linear dependence of the track diameter on the etching time in sodium silicate glasses, an assumption is required concerning the three zones of track etching: the axial, the peripheral and the interstitial, where the etching rates are different.</p><p>Spectrometric characteristics of the glasses used have been determined, and it is shown that the studied phosphate glasses, in comparison with ZnP, have a greater dispersion of track diameters, which causes a lower energy resolution and the necessity of selecting optimum etching.</p></div>","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"20 4","pages":"Pages 583-588"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/1359-0189(92)90008-J","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71783983","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}

{"title":"Bulk-etching behaviour of Kapton and Thermalimide track detectors","authors":"S.K. Chakarvarti,&nbsp;S.K. Mahna","doi":"10.1016/1359-0189(92)90009-K","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90009-K","url":null,"abstract":"<div><p>Polyimides and polyetherimides have recently been recognized as materials with unique properties which are essential for the production of more efficient and useful nuclear track filters. We report here the bulk-etch characteristics of Kapton-H (polyimide) and Thermalimide foils using etchants NaOCl (4% Cl w/v) and NaOCl + ethanol (1:1) at different temperatures and under ambient light and dark conditions, with and without stirring. The activation energy values for etching are also reported.</p></div>","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"20 4","pages":"Pages 589-594"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/1359-0189(92)90009-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71783984","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}

{"title":"Measurement of radon exhalation rate from some building materials","authors":"A. Khan, R. Prasad, R. Tyagi","doi":"10.1016/1359-0189(92)90013-L","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90013-L","url":null,"abstract":"","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"136 2 1","pages":"609-610"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82993211","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}

{"title":"Tracks in glasses from fission fragments with fixed parameters","authors":"V. A. Nikolaev, A. F. Belyaev, M. V. Demichev, V. Kogan, V. Kopchenov","doi":"10.1016/1359-0189(92)90008-J","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90008-J","url":null,"abstract":"","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"10 1","pages":"583-588"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90149299","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}

{"title":"Effect of ultraviolet light, solar radiation, XeCl laser and xenon arc lamp on the nuclear track recording properties of CR-39","authors":"F. Abu-Jarad,&nbsp;M.A. Islam,&nbsp;I. Abu-Abdoun,&nbsp;M.A. Khan","doi":"10.1016/1359-0189(92)90001-C","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90001-C","url":null,"abstract":"<div><p>CR-39 nuclear track detectors were exposed in air to various light sources such as three ultraviolet (u.v.) lamps (<em>λ</em> = 253.7, 300 <em>and</em> 350 <em>nm</em>), a xenon chloride (XeCl) excimer laser (<em>λ</em> = 308 <em>nm</em>), a xenon arc lamp and sunlight. A visible change of colour (yellowing) of detectors under heavy doses was noticed with the first three sources. The exposure to u.v. light sources resulted in degradation of the surface and in an increase of the bulk (<em>V</em>_b) and track (<em>V</em>_t) etch rates at wavelengths of 253.7 and 350 nm, while at 300 nm no such increase was observed. In an attempt to explain this odd behaviour u.v. absorption spectra of CR-39 obtained after exposure to the various u.v. sources were also studied. However, no clear answer emerged. On the other hand, a slight enhancement in detector sensitivity (<em>V</em> = <em>V</em>_<em>t</em>/<em>V</em>_<em>b</em>) was observed for the samples exposed to 253.7 and 350 nm only. At a wavelength of 350 nm different exposure times resulted in different etch induction times. In fact, etch induction time for fission fragments shortened from 28 min for unexposed samples to 2 min in the samples exposed for 86 h and <em>V</em>_b decreased with the depth of the plastic. On the other hand, the exposure to an excimer laser resulted in apparent softening of the surfaces for a cumulative energy density up to 30 J cm^-2 and hardening started from 30 up to 230 J cm^-2. The laser hardening, however, was found to saturate above an exposure dose of 40 J cm^-2. The surface of the detectors was also damaged when exposed to a high dose from a xenon arc lamp. However, for shorter exposure times, the effect was a slight decrease in <em>V</em>_b and <em>V</em>_t. Finally, a controlled exposure to natural sunlight caused an increase of both the <em>V</em>_b and <em>V</em>_t up to 30 h of exposure, and saturation started after that, while no enhancement was noticed in <em>V</em>. Long exposures (2 months) resulted in constant <em>V</em>_b, and increase in <em>V</em>_t and <em>V</em> with etching time.</p></div>","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"20 4","pages":"Pages 531-541"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/1359-0189(92)90001-C","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71783978","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}

{"title":"Sensitization of track etching in CR-39 by copolymerization with methacryloyl-L-alanine methyl ester","authors":"Masao Tamada,&nbsp;Masaru Yoshida,&nbsp;Masaharu Asano,&nbsp;Hideki Omichi,&nbsp;Ryoichi Katakal,&nbsp;Christine Trautmann,&nbsp;Johann Vetter,&nbsp;Reimar Shohr","doi":"10.1016/1359-0189(92)90002-D","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90002-D","url":null,"abstract":"<div><p>Copolymer films of diethyleneglycol-bis-allylcarbonate (monomer of CR-39) and selected volume percentages of methacryloyl-<span>L</span>-alanine methyl ester (MA-<span>L</span>-AlaOMe) between 5 and 60% were irradiated with Au ions of 13 MeV nucl^-1 and etched in NaOH solution at 60°C. Sensitization of track etching was observed for NaOH concentrations of 4 and 6 N. The maximum reduced etch-rate ratio, <em>V</em>_t/<em>V</em>_b-1, was obtained for the copolymer of 90% of CR-39 monomer and 10% of MA-<span>L</span>-AlaOMe at 4 N NaOH, which was 3.6 times higher than that for pure CR-39. The sensitization was accompanied by an increase in <em>V</em>_b so that the etching time could be reduced to <em>ca</em> 1/30 in comparison with that for pure CR-39.</p></div>","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"20 4","pages":"Pages 543-547"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/1359-0189(92)90002-D","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71783979","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}

{"title":"A new system for measuring optically stimulated luminescence from quartz samples","authors":"L. Bøtter-Jensen ,&nbsp;G.A.T. Duller","doi":"10.1016/1359-0189(92)90003-E","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90003-E","url":null,"abstract":"<div><p>An optically stimulated luminescence (OSL) unit based on a halogen lamp light source has been developed for the stimulation of quartz samples. In addition to the halogen light source, the OSL unit incorporates an infra-red diode array for infra-red-stimulated luminescence (IRSL) measurements of feldspar samples and for screening the purity of quartz. The new OSL unit can be fitted directly onto the automated Risø TL dating apparatus. The stimulation spectrum filtered from the halogen lamp delivers about 16mW cm^-2 at the sample. Preliminary OSL studies of quartz samples are described, and dating results are presented.</p></div>","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"20 4","pages":"Pages 549-553"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/1359-0189(92)90003-E","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71784520","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}

{"title":"Temperature-related effects in radon dosimetry using plastic track detectors","authors":"S. R. Hashemi-Nezhad, L. Peak, A. Bakich","doi":"10.1016/1359-0189(92)90007-I","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90007-I","url":null,"abstract":"","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"29 1","pages":"575-581"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78663563","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}

{"title":"Universal multidetector etching stand for electrochemically etched plastic track detectors","authors":"K. Turek","doi":"10.1016/1359-0189(92)90011-J","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90011-J","url":null,"abstract":"","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"81 1","pages":"601-604"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74357127","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}

{"title":"The electrochemical etching of fission fragment tracks in tuffak polycarbonate","authors":"I. Othman,&nbsp;G. Raja,&nbsp;M. Al-Hushari,&nbsp;R.H. Iyer","doi":"10.1016/1359-0189(92)90004-F","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90004-F","url":null,"abstract":"<div><p>A detailed and systematic study on the ekectrochemical etching (ECE) characteristics of fission fragment tracks in the new Tuffak polycarbonate has been made. These studies have enabled us to determine optimum conditions for the unambiguous detection and identification of fission tracks without any interference from background tracks due to surface defects, neutron-induced recoils and alpha-particle tracks, emitted by radon and its decay products. The optimum conditions were found to be 20 min pre-chemical etching (PCE) with 6 M NaOH at 60°C; followed by 30 min of electrochemical etching at 20 kV cm^-1, 2 kHz, in a solution of 15% KOH, 40% ethyl alcohol, 45% water, at a temperature of 25°C. Under these conditions, the fission tracks develop into “trees” of size 25–30 μm, with a clearly visible tail. In some tracks a “double tree” was observed.</p></div>","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"20 4","pages":"Pages 555-560"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/1359-0189(92)90004-F","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71783980","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}