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Relativistic electron—positron gamma ray laser 相对论性电子-正电子伽马射线激光器
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35816
F. Winterberg
{"title":"Relativistic electron—positron gamma ray laser","authors":"F. Winterberg","doi":"10.1063/1.35816","DOIUrl":"https://doi.org/10.1063/1.35816","url":null,"abstract":"A relativistic electron—positron superpinch, established by the coalescence of two counterstreaming electron—and positron beams is ideally suited for a gamma ray laser, producing multi‐MeV photons. The concept ideally combines the property of a relativistic electron—positron superpinch, for the rapid attainment of high densities by magnetic pinch forces, with the greatly reduced annihilation cross section at relativistic energies, permitting to establish a high population inversion.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122772283","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
Theoretical approaches to understanding molecular multiple-photon excitation 理解分子多光子激发的理论方法
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35719
C. Cantrell
{"title":"Theoretical approaches to understanding molecular multiple-photon excitation","authors":"C. Cantrell","doi":"10.1063/1.35719","DOIUrl":"https://doi.org/10.1063/1.35719","url":null,"abstract":"Theories of molecular multiple‐photon excitation are reviewed from the point of view of practical implementation. New methods that permit the solution of the time‐dependent Schroedinger equation for systems with many energy levels are described.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124178396","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
Application of nonlinear Raman spectroscopy in combustion and plasma diagnostics 非线性拉曼光谱在燃烧和等离子体诊断中的应用
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35768
A. Eckbreth
{"title":"Application of nonlinear Raman spectroscopy in combustion and plasma diagnostics","authors":"A. Eckbreth","doi":"10.1063/1.35768","DOIUrl":"https://doi.org/10.1063/1.35768","url":null,"abstract":"","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126588764","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
Cr3+ in K2NaScF6: crystal growth and spectroscopy K2NaScF6中Cr3+:晶体生长和光谱
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35860
L. Andrews, B. C. Mccollum, R. Bartram
{"title":"Cr3+ in K2NaScF6: crystal growth and spectroscopy","authors":"L. Andrews, B. C. Mccollum, R. Bartram","doi":"10.1063/1.35860","DOIUrl":"https://doi.org/10.1063/1.35860","url":null,"abstract":"Crystal growth of the candidate tunable laser material K2NaScF6:Cr3+ by a vertical Bridgman technique is described along with studies of its radiationless relaxation and excited state absorption.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126666928","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
Possibility of grasing by laser‐driven nuclear excitation* 由激光驱动的核激发的掠光可能性*
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35928
L. Biedenharn, K. Boyer, J. Solem
{"title":"Possibility of grasing by laser‐driven nuclear excitation*","authors":"L. Biedenharn, K. Boyer, J. Solem","doi":"10.1063/1.35928","DOIUrl":"https://doi.org/10.1063/1.35928","url":null,"abstract":"235U is considered as a possible gamma‐ray laser candidate via a pumping mechanism of sequential laser‐driven coherent oscillations of outer atomic shells and the coupling by way of nuclear multiple moments to produce nuclear excitation of the 73 ev first excited state.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130480455","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
Photofragment vibrational excitation and thermal chemistry following 351 nm photolysis of Mn2(CO)10 Mn2(CO)10 351nm光解后的光碎片振动激发和热化学
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35945
R. Bray, P. Seidler, J. Gethner, R. Woodin
{"title":"Photofragment vibrational excitation and thermal chemistry following 351 nm photolysis of Mn2(CO)10","authors":"R. Bray, P. Seidler, J. Gethner, R. Woodin","doi":"10.1063/1.35945","DOIUrl":"https://doi.org/10.1063/1.35945","url":null,"abstract":"We have demonstrated the application of infrared emission to probe the structure and dynamics of organometallic intermediates.1 We identified the species produced by photolysis of gas phase Mn2(CO)10, measured the vibrational relaxation rates of Mn(CO)5 for seven gases and have begun to characterize the secondary chemistry.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132024452","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
Cross‐saturating sideband absorption: The limits of detectivity 交叉饱和边带吸收:探测极限
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35752
J. Bialas, R. Blatt, W. Neuhauser, P. Toschek
{"title":"Cross‐saturating sideband absorption: The limits of detectivity","authors":"J. Bialas, R. Blatt, W. Neuhauser, P. Toschek","doi":"10.1063/1.35752","DOIUrl":"https://doi.org/10.1063/1.35752","url":null,"abstract":"Cross‐saturating sideband absorption spectroscopy has been found to be the most sensitive spectroscopic technique, next to fluorescence detection. The minimum extinction determined by the particular absorber, is 5×10−8, which is 8 orders of magnitude lower than the estimated sensitivity of current measurements of two‐photon‐excited fluorescence from H in flames. (AIP)","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133764430","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
Picosecond Raman studies using a 5 KHz tunable dye laser system 使用5khz可调谐染料激光系统进行皮秒拉曼研究
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35954
J. B. Hopkins, P. Rentzepis
{"title":"Picosecond Raman studies using a 5 KHz tunable dye laser system","authors":"J. B. Hopkins, P. Rentzepis","doi":"10.1063/1.35954","DOIUrl":"https://doi.org/10.1063/1.35954","url":null,"abstract":"We have developed a very high sensitivity picosecond spectroscopic technique which eliminates many of the deliterions effects found in high power low repetition rate experimental systems. We find that the commonly occurring multiphoton, saturation, and decomposition problems which often occur in chemical and biological systems studied with low repetition rate high power lasers are practically eliminated. In addition, this system enables us to utilize photon counting technics allowing for the detection of extremely weak signals.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132658108","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
Photochemistry of trimethylgallium with applications to atomic gallium reaction kinetics 三甲基镓的光化学及其在镓原子反应动力学中的应用
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35943
S. Baughcum, R. Oldenborg
{"title":"Photochemistry of trimethylgallium with applications to atomic gallium reaction kinetics","authors":"S. Baughcum, R. Oldenborg","doi":"10.1063/1.35943","DOIUrl":"https://doi.org/10.1063/1.35943","url":null,"abstract":"The photodissociation of gas‐phase trimethylgallium at 193 nm has been investigated using the laser photolysis/laser induced fluorescence technique. Gallium atoms are produced by multiple‐photon processes during the time of the excimer laser pulse and continue to be produced at long times after the photolysis pulse. The observed dependences on photolysis laser fluence, trimethylgallium pressure, and buffer gas pressure are consistent with a mechanism in which highly excited gallium methyl radicals undergo unimolecular decomposition to produce gallium atoms. Since this process can happen on time scales long compared to the photolysis laser pulse, these results may have important implications for studies of laser deposition of thin metal films.","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130768610","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
Laser‐induced dissociation dynamics in triatomic molecules 激光诱导的三原子分子解离动力学
Advances in Laser Science-I Pub Date : 2008-06-05 DOI: 10.1063/1.35736
W. K. Liu, W. Fletcher, D. W. Noid
{"title":"Laser‐induced dissociation dynamics in triatomic molecules","authors":"W. K. Liu, W. Fletcher, D. W. Noid","doi":"10.1063/1.35736","DOIUrl":"https://doi.org/10.1063/1.35736","url":null,"abstract":"The effect of laser radiation on the dissociation dynamics of triatomic molecules is investigated. (AIP)","PeriodicalId":298672,"journal":{"name":"Advances in Laser Science-I","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130956353","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
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