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激光杂志 1986年第3期7卷 113-125页

作者： F.S.Becker k.l.kompa

Ⅱ．B．典型化合物多光子寓勰的同位素分离及其理论解释初探这一节的第一部分对SF日多光子离解实验中观察到的一些结果作一概述，对于将这种同位素分离能移用于UR的那些结果给予特别重视。

关键词：物理研究铀同位素激光分离实验同位素分离理论解释多光子化合物

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激光分离铀同位素的实验和物理研究(一)

激光杂志 1986年第2期7卷 57-65页

作者： F．S．Becker k.l.kompa 无吕百达（校）不详四川大学物理系激光研究室

目前,最常采用的激光分离铀同位素方法主要是以铀蒸汽、有机铀化合物或六氟化轴等为研究对象。原子蒸汽法发展得最为成熟,但由于铀蒸汽的腐蚀性和很低的工作压强使其实现商品化生产面临着严峻的困难。对一个商品化生产的分离厂来说,UF_... 详细信息

目前,最常采用的激光分离铀同位素方法主要是以铀蒸汽、有机铀化合物或六氟化轴等为研究对象。原子蒸汽法发展得最为成熟,但由于铀蒸汽的腐蚀性和很低的工作压强使其实现商品化生产面临着严峻的困难。对一个商品化生产的分离厂来说,UF_6足最有吸引力的工作气体。因UF_6很小的同位素位移而产生的问题有希望通过在16μm和9μm波段范围的两种红外光的应用而得到解决。当前,仅有用CO_2激光泵浦的CF_4激光器或用CO_2激光作用于仲氢产生的受激转动拉曼散射光能够提供用于选择性激发的16μm激光能量。而且从可测量性和频率可调谐性来考虑,拉曼方法的前景更为乐观。对一个商品化生产的分离厂来说,日前这两种激光器的发展水平还不能满足要求,此外很可能用超声分子束方法来简化复杂的UF_6谱是必不可少的。然而,利用现有水平的这类激光器,足以进行实验以弄清尚未解决的问题,即两种有不同吸收峰的UF_6同位素的选择性光离解到什么样的程度以及多大的产额等。

关键词：铀同位素激光分离物理研究实验商品化生产激光能量拉曼散射同位素方法同位素位移选择性激发

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CIF激光的研究

量子电子学 1985年第1期 51-56页

作者：赵震声 D.Prock k.l.kompa 中国科学院安徽光学精密机械研究所 Max—Planck—Institut für Quantenoptik München. FRG

为了给维他命D的合成提供有效的紫外光源,我们研究了波长为285nm的ClF激光。本文详细报导了ClF激光的输出特性与各种参量之间的关系。在Cl2/F2的混合气体中,用He作缓冲气体,总气压直到7.5bar,最大激光输出为10.97mJ,激光脉宽为10ns。

关键词：激光气压输出特性 Cl 卤素 ⅦA族元素非金属元素 CIF 激光输出

双色激光共振增强的气相C6H6分子的光电离谱

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光学学报 1987年第1期 1-10页

作者：范俊颖,G.MüllER,J.l.lYMAN,W.E.SOHMID,k.l.kompa 中国科学院上海光学精密机械研究所 Max-Planck-Institut für Quantenoptik D-8046 Garching b.München FRG los Alamos National laboratory New Mexico 87545 USA Max-Planck-Institut für Quantenoptik D-8046 Garching b.München FRG Max-Planck-Institut für Quantenoptik D-8046 Garching b.München FRG

本文给出了双色激光共振增强的气相苯的光电离谱结果。激发光子首先把分子从基态选择激发到s-1电子单态中一个确定的振动态,然后第二台激光器输出的离化光子把这个激发分子离化。实验证明离子的产额不但与中间电子能级1B2u的振动态有关... 详细信息

本文给出了双色激光共振增强的气相苯的光电离谱结果。激发光子首先把分子从基态选择激发到s-1电子单态中一个确定的振动态,然后第二台激光器输出的离化光子把这个激发分子离化。实验证明离子的产额不但与中间电子能级1B2u的振动态有关,且依赖于离化激光的波长。从所得到的离子谱的结构和强度可以求得离子的电子基态2E1g的振动频率及分子参数,精度较高。自离化里德堡能级对离化截面的贡献非常显著。某些自离化共振峰可以确认为是这些里德堡态的振动能级。

关键词：电子态跃迁 C6H6 激光双色共振增强气相

在横向快放电激发的He-Ar-F2混合气体中Ar2F*动力学的研究

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应用激光 1983年第6期 27-30+10页

作者：顾之玉王绍英 D.Proch F.Rebentrost H.Webe k.l.kompa 中国科学院安徽光学精密机械研究所中国科学院安徽光学精密机械研究所西德、马克斯——普朗克研究所西德、马克斯——普朗克研究所西德、马克斯——普朗克研究所西德、马克斯——普朗克研究所

通过对横向快放电激发的 He-Ar-F2混合气体进行 ArF（?）和 Ar2F（?）的各种荧光观测,获得了不同条件下 Ar2F（?）的时间积分和时间分辨光谱的资料,测定了 Ar2F（?）的自发辐射寿命和 F2对 Ar2F（?）的猝灭速率常数,提出和分析了 Ar2F（... 详细信息

通过对横向快放电激发的 He-Ar-F2混合气体进行 ArF（?）和 Ar2F（?）的各种荧光观测,获得了不同条件下 Ar2F（?）的时间积分和时间分辨光谱的资料,测定了 Ar2F（?）的自发辐射寿命和 F2对 Ar2F（?）的猝灭速率常数,提出和分析了 Ar2F（?）在放电条件下的形成动力学特性。

关键词：混合气体 Ar2F He-Ar-F2

双色激光共振增强的气相C6H6分子的光电离谱

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量子电子学 1986年第4期 297-298页

作者：范俊颖 G.Müller J.l.lyman W.E.Schmid k.l.kompa 中国科学院上海光学精密机械研究所 Max-Planck-Institut fur Quautenoptik D-8046 Garching b.Munchen West Germany los Alamos Natianal laboratory New Mexico 87545 U.S.A. 中国科学院上海光学精密机械研究所

我们的实验研究了高于离化阈值约为3000cm-1的离化谱特性。实验证明离子的产额不但与中间电子能级1B2u的振动态有关,也依赖于离化激光的波长。从得到的离子谱的结构和强度我们可以得到离子的电子基态2E1g的振动频率及分子参数,可以达... 详细信息

我们的实验研究了高于离化阈值约为3000cm-1的离化谱特性。实验证明离子的产额不但与中间电子能级1B2u的振动态有关,也依赖于离化激光的波长。从得到的离子谱的结构和强度我们可以得到离子的电子基态2E1g的振动频率及分子参数,可以达到较高的精度。自离化Rydberg能级对离化截面的贡献非常显著。某些自离化共振峰可以确认为是这些Rrdberg

关键词：光电离 C6H6 离化 Rydberg 振动能级电子能级分子参数产额共振峰电子态

Cool white light and tunable multicolor emission from Tb^(3+)/Dy^(3+)co-activated glasses under different excitations for WlEDs

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Journal of Rare Earths 2024年第1期42卷 46-56,I0002页

作者： l.Vijayalakshmi k.Naveen kumar Jong Dae Baek Department of Automotive Engineering Yeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea Department of Mechanical Engineering Yeungnam UniversityGyeongsan38541Republic of Korea

A set of co-doped(Tb^(3+)/Dy^(3+))lithium zinc borate(lZB)glasses were developed by melt *** structural evaluation was performed for synthesized glassy *** Dy^(3+)and Tb^(3+)individually doped glasses exhibit intense yellow and green luminescence bands at 575 nm(^(4)F_(9/2)→^(6)H_(13/2))and543 nm(^(5)D_(4)→^(7)F_(5)),*** sensitization effect of Dy^(3+)on Tb^(3+)was analyzed by increasing the Tb^(3+)content with respect to the optimum Dy^(3+)content(0.5 mol%)in Dy^(3+)/Tb^(3+).The spectral overlay of Dy^(3+)luminescence and Tb^(3+)absorption profiles,Dy^(3+)/Tb^(3+)Pl spectra under different excitations 352,362,376,and 385 nm,shortening decay lifetimes of Dy^(3+)in Dy^(3+)/Tb^(3+)co-activated glasses,energy transfer(ET)parameters,chromaticity coordinates and their corresponding correlated temperatures all help to explain ET from Dy^(3+)to Tb^(3+).At 385 nm of Dy^(3+)excitation,the optimized co-activated(0.5Dy^(3+)+1.0Tb^(3+)):lZB glass displays cool white light *** non-radiative ET from Dy^(3+)to Tb^(3+)is dominated by electric dipole-dipole interaction and its ET efficiency was calculated to be 63%.At the same time,reverse ET from Tb^(3+)to Dy^(3+)was also *** shift in color coordinates from dominant yellow to greenish-yellow,green and white light emission suggests that Dy^(3+)/Tb^(3+)coactivated lZB glasses can be a potential candidate for UV converted multicolor and white light emitting devices.

关键词： Rare earths Photoluminescence Energy transfer Spectral overlap Decay lifetime Multicolor emitting lEDs

Effect of cylinder wall parameters on the final packing density of mono-disperse spheres subject to three-dimensional vibrations Author links open overlay panel

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Particuology 2024年第8期91卷 211-225页

作者： Jack R.Grogan Andrei l.Nicuşan Christopher R.k.Windows-Yule School of Chemical Engineering The University of BirminghamEdgbastonBirminghamB152TTUK

Achieving densely packed particles is desirable within the industries of ceramics,pharmaceuticals,defence and additive *** this work,we use the discrete element method(DEM)to determine the effect of wall parameters on the final packing density of mono-disperse spheres subject to 4 varying three-dimensional vibration and fill *** focus specifically on the impact of the container wall parameters on the particles'final packing *** on from the validation of the DEM simulation the particle-wall coefficient of restitution,the particle-wall coefficient of rolling friction and the particle-wall coefficient of sliding friction were varied individually and the effect on the final packing density *** relatively low particle-particle friction glass beads,the effect of these wall properties had no discernible effect on the final packing density *** on from these findings the particle-wall properties were varied at the extreme values of particle-particle coefficient of rolling friction and particle-particle coefficient of sliding *** a particle-particle coefficient of sliding friction=1,increases in particle-wall coefficient of restitution resulted in a minor increase in the final packing density of particles though this was not statistically *** a particle-particle coefficient of sliding friction=1,increases in particle-wall coefficient of rolling friction resulted in a minor decrease in the final packing density of the particles though again not to a degree where the trend can,with complete certainty,be distinguished from the random error across the ***,when the particle-particle coefficient of sliding friction=1,increases in particle-wall coefficient of sliding friction resulted in a significant decrease in the final packing density of *** decrease was attributed to the propagation of force chains throughout the *** significant decrease in final packing density with

关键词： Vibropacking Packing Densification Vibration Discrete element method Friction Wall friction Restitution

Use of donepezil for neurocognitive recovery after brain injury in adult and pediatric populations:a scoping review

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Neural Regeneration Research 2024年第8期19卷 1686-1695页

作者： Avery l.Miller Nathan k.Evanson J.Michael Taylor University of Cincinnati College of Medicine CincinnatiOHUSA Department of Pediatrics University of CincinnatiCincinnatiOHUSA Department of Neurology and Rehabilitation Medicine University of CincinnatiCincinnatiOHUSA Division of Pediatric Rehabilitation Medicine Cincinnati Children’s Hospital Medical CenterCincinnatiOHUSA Division of Neurology Cincinnati Children’s Hospital Medical CenterCincinnatiOHUSA

There are few pharmacologic options for the treatment of cognitive deficits associated with traumatic brain injury in pediatric *** inhibitors such as donepezil have been evaluated in adult patients after traumatic brain injury,but relatively less is known about the effect in pediatric *** goal of this review is to identify knowledge gaps in the efficacy and safety of acetylcholinesterase inhibito rs as a potential a djuvant treatment fo r neurocognitive decline in pediatric patients with traumatic brain *** queried PubMed to identify literature published from database inception thro ugh June 2023 desc ribing the use of donepezil in young adult traumatic brain injury and pediatric patients with predefined *** on preselected search criteria,340 unique papers we re selected for title and abstra ct ***-two reco rds were reviewed in full after eliminating preclinical studies and pape rs outside the scope of the *** adult traumatic brain injury,we review results from 14 papers detailing 227 subjects where evidence suggests donepezil is well tole rated and shows both objective and patient-reported efficacy for reducing cognitive *** children,3 pape rs report on 5 children recovering from traumatic brain injury,showing limited *** additional 15 pediatric studies conducted in populations at risk for cognitive dysfunction provide a broader look at safety and efficacy in 210 patients in the pediatric age *** its promise for efficacy in adults with traumatic brain injury and tole rability in pediatric patients,we believe further study of donepezil for children and adolescents with traumatic brain injury is warranted.

关键词： acetylcholinesterase inhibitor adult cognition donepezil pediatrics traumatic brain injury

SARS-CoV-2 and innate immunity:the good,the bad,and the"goldilocks"

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Cellular & Molecular Immunology 2024年第2期21卷 171-183页

作者： Benjamin l.Sievers Mark T.k.Cheng kata Csiba Bo Meng Ravindra k.Gupta Department of Medicine University of CambridgeCambridgeUK Cambridge Institute of Therapeutic Immunology&Infectious Disease(CITID) Department of MedicineUniversity of CambridgeCambridgeUk

An ancient conflict between hosts and pathogens has driven the innate and adaptive arms of *** about this interplay can not only help us identify biological mechanisms but also reveal pathogen vulnerabilities that can be leveraged *** humoral response to SARS-CoV-2 infection has been the focus of intense research,and the role of the innate immune system has received significantly less ***,we review current knowledge of the innate immune response to SARS-CoV-2 infection and the various means SARS-CoV-2 employs to evade innate defense *** also consider the role of innate immunity in SARS-CoV-2 vaccines and in the phenomenon of long COVID.

关键词： SARS-CoV-2 Innate immune response Interferon Cytokines Inflammation Antiviral targets