Multiphoton reduction of lanthanide ions and isotope enrichment by a high intensity laser
高强度激光对镧系离子的多光子还原和同位素富集
基本信息
- 批准号:19350016
- 负责人:
- 金额:$ 12.56万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2007
- 资助国家:日本
- 起止时间:2007 至 2009
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Eu^<3+>→Eu^<2+> ReductionEuropium 3+ ions in methanol were found to be reduced to the corresponding 2+ ions upon irradiation with intense femtosecond laser pulses. The excitation wavelength of 800 nm was nonresonant with their electronic transitions of Eu^<3+>. It is notable that femtosecond white-light laser was generated when the reactions occurred. The mechanisms can be explained in terms of solvated electron formation followed by the reduction. The electron ejection in a focused beam in solution has been known to be accompanied by white-light laser.Sm^<3+>→Sm^<2+> ReductionSamarium 3+ ions in methanol were found to be reduced to the corresponding 2+ ions upon irradiation with intense femtosecond laser pulses. The reduction was observed at both pulses with central wavelengths of 403 nm converted from an 800-fs fundamental pulse and 800 nm with a duration of 43 fs. When the laser wavelength was tuned to the 4f-4f absorption at 403 nm corresponding to the ^6P_<3/2>←^6H_<5/2> transitio … More n, the the reduction occurred by multiphoton absorption presumably due to reaching the deep charge transfer state. In the case of excitation by 800-nm pulses of the fundamental wavelength of the Ti:sapphire laser, the reduction is considered to occur via solvent ionization followed by electron capture by Sm^<3+>. The product Sm^<2+> was detected by its fluorescence, which was observed for the first time in solution and showed a broad spectrum peak around 750 nm with a quantum yield of 0.050 in methanol in the presence of 15C5-ether.Isotope EnrichmentThe molar extinction coefficient of the ^6P_<3/2>←^6H_<5/2> transition is reportedly 10% different between ^<144>Sm^<3+> and ^<154>Sm^<3+> in solution : therefore, different isotope distributions among Samarium 2+ ions should be realized after the multiphoton reduction from Sm^<3+> to Sm^<2+>. This confirmation is currently in progress.Preliminary results for Yb^<3+>→Yb^<2+> ReactionYb^<3+> has successfully reduced to Yb^<2+> by femtosecond pulse excitation with pulse duration of about 100 fs at three wavelengths of 800 nm, 970 nm, and 1930 nm. Yb^<3+> has the 4f-4f transition at 970 nm ; however, resonance enhancement for the formation of Yb^<2+> was not clear at this stage. Less
Eu^<3+>→Eu^<2+>还原发现在强飞秒激光脉冲照射下,甲醇中的铕3+离子被还原为相应的2+离子。激发波长为800 nm,与Eu^<3+>的电子跃迁不共振。值得注意的是,反应发生时产生了飞秒白光激光。其机理可以用溶剂化电子形成后的还原来解释。在溶液中,电子在聚焦光束中的射出是伴随着白光激光的。Sm^<3+>→Sm^<2+>还原甲醇中的钐3+离子在强飞秒激光脉冲照射下被还原为相应的2+离子。在中心波长为403 nm的脉冲和800 nm持续时间为43 fs的脉冲中都观察到这种减少。当激光波长调到403 nm处的4f-4f吸收时,对应于^6P_<3/2>←^6H_<5/2>的跃迁,更多n,多光子吸收发生了还原,可能是由于达到了深电荷转移态。在由基本波长为800 nm的Ti:蓝宝石激光器激发的情况下,认为还原是通过溶剂电离和Sm^<3+>的电子捕获发生的。产物Sm^<2+>的荧光检测是首次在溶液中观察到,在15c5 -醚存在的甲醇中,在750 nm左右出现了广谱峰,量子产率为0.050。同位素富集据报道,溶液中^6P_<3/2>←^6H_<5/2>跃迁的摩尔消光系数在^<144>Sm^<3+>和^<154>Sm^<3+>之间相差10%,因此,从Sm^<3+>到Sm^<2+>的多光子还原后,钐2+离子之间应该实现不同的同位素分布。此确认目前正在进行中。Yb^<3+>→Yb^<2+> ReactionYb^<3+>通过飞秒脉冲激发,在800 nm、970 nm和1930 nm三个波长下,脉冲持续时间约为100 fs,成功地还原为Yb^<2+>。Yb^<3+>在970 nm处发生4f-4f跃迁;然而,Yb^<2+>形成的共振增强在此阶段尚不清楚。少
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Ionization and Fragmentation of Organic Molecules by 0.8-1.5 ・m Femtosecond Laser Pulses
0.8-1.5 m 飞秒激光脉冲对有机分子的电离和破碎
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:N. Nakashima;M. Tanaka;M. Kawaji;T. Yatsuhashi
- 通讯作者:T. Yatsuhashi
高強度フェムト秒レーザーで拓く化学反応:気相から固相, 液相へ
使用高强度飞秒激光开发的化学反应:从气相到固相再到液相
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:ポスター;三ツ林尚哉;八ッ橋知幸;中島信昭;八ッ橋知幸
- 通讯作者:八ッ橋知幸
強レーザー場による有機分子のイオン化・クーロン爆発
强激光场对有机分子的电离和库仑爆炸
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:河原 みよ子;ら;M. Yabuno;G. Yokokura;Y. F. Li;Z. Ghorannevis;T. Kaneko;T. Kato;T. Kaneko;J. Shishido;Y. F. Li;R. Hatakeyama;Y. F. Li;K. Takahashi;中島 信昭
- 通讯作者:中島 信昭
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
NAKASHIMA Nobuaki其他文献
NAKASHIMA Nobuaki的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('NAKASHIMA Nobuaki', 18)}}的其他基金
Chemistry in Femtosecond pulse Filamentation - Metalion Reduction and Metal nano Particle Formation-
飞秒脉冲丝化中的化学 - 金属离子还原和金属纳米粒子形成 -
- 批准号:
26410028 - 财政年份:2014
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Photochemistry of Lanthanide Ions-Multiphoton Chemistry via 4f Electronic Excited States-
镧系离子的光化学-通过 4f 电子激发态的多光子化学-
- 批准号:
23550030 - 财政年份:2011
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Photo-dissociation on Irradiation with a High Power VUV Laser
高功率 VUV 激光照射下的光解离
- 批准号:
06640653 - 财政年份:1994
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
相似海外基金
二水素錯体における水素同位体分離機構の解明と分離能向上
阐明氢同位素分离机理并提高二氢配合物的分离性能
- 批准号:
23K26747 - 财政年份:2024
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
冷低温域の水素同位体分離に向けた8員環ゼオライト吸着材の開発と分離能の評価
冷低温氢同位素分离八元环沸石吸附剂的研制及分离能力评价
- 批准号:
23K25851 - 财政年份:2024
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
二水素錯体における水素同位体分離機構の解明と分離能向上
阐明氢同位素分离机理并提高二氢配合物的分离性能
- 批准号:
23H02054 - 财政年份:2023
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
冷低温域の水素同位体分離に向けた8員環ゼオライト吸着材の開発と分離能の評価
冷低温氢同位素分离八元环沸石吸附剂的研制及分离能力评价
- 批准号:
23H01154 - 财政年份:2023
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
量子ウォークによる同位体分離の原理的研究
量子行走分离同位素的原理研究
- 批准号:
22K04994 - 财政年份:2022
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
ソフト多孔性結晶が示す分子認識機構の解明と同位体分離技術への応用展開
阐明软多孔晶体的分子识别机制及其在同位素分离技术中的应用
- 批准号:
15J05846 - 财政年份:2015
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for JSPS Fellows
低温吸着法水素同位体分離における減圧脱着挙動
低温吸附法分离氢同位素的真空解吸行为
- 批准号:
20049005 - 财政年份:2008
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas
二重ベータ崩壊研究のためのカルシウムのレーザー同位体分離
钙的激光同位素分离用于双 β 衰变研究
- 批准号:
19654037 - 财政年份:2007
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
ガリウムを挿入ホストとするリチウムおよびカルシウムの同位体分離
使用镓作为插入主体分离锂和钙的同位素
- 批准号:
18656273 - 财政年份:2006
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Exploratory Research
超リチウムイオン伝導体によるリチウム同位体分離法の研究
利用超级锂离子导体分离锂同位素方法的研究
- 批准号:
17760671 - 财政年份:2005
- 资助金额:
$ 12.56万 - 项目类别:
Grant-in-Aid for Young Scientists (B)