共鳴イオン化分光法による不安定タングステン、オスミウム同位体の研究

共振电离光谱法研究钨、锇不稳定同位素

• 批准号: 14F04735
• 负责人: 和田 道治
• 金额: $ 1.47万
• 依托单位: Institute of Physical and Chemical Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2014
• 资助国家: 日本
• 起止时间: 2014-04-25 至 2017-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14F04735/
• 关键词: レーザー核分光; 共鳴イオン化分光; 高融点元素; パラサイトRIビーム; radioactive ion beam; laser spectroscopy; gas cell; ガスセル

The last months of my JSPS fellowship were dedicated to preparing for upcoming PALIS commissioning experiments taking place in the following autumn. This included installing the PALIS set-up back to the BigRIPS F2 chamber and work to resolve issues that arose during the previous experiments in FY2015, for example isolating sources of vibrations that affected the laser beam positioning. Additionally, a motorized stage for final aiming of the laser was developed. The stage was successfully utilized during the measurements in autumn where provided critical laser alignment aid.Regarding the primary JSPS fellowship research project, multiple potential ionization schemes were identified for osmium and tungsten leveraging on the combined Dye and Titanium:sapphire system. In anticipation for applying these schemes, the resonance ionization process within the PALIS-system has been simulated utilizing rate-equations in order to determine the factors affecting the, and to probe the ionization efficiency. These simulations will be invaluable when proceeding towards high-resolution RIS utilizing an injection-locked Titanium:sapphire laser, recently commissioned in an off-line conditions with zirconium in collaboration with the University of Nagoya.Shortly after finishing the JSPS fellowship, I began an Academy of Finland funded 3 years position in Finland. This position includes funding for research Japan thus enabling a direct continuation for the research projects started under the JSPS fellowship.

我的JSPS奖学金的最后几个月致力于为即将到来的PALIS调试实验做准备，该实验将于次年秋季进行。 这包括将PALIS装置安装回BigRIPS F2腔室，并努力解决2015财年之前实验中出现的问题，例如隔离影响激光束定位的振动源。此外，还开发了一个用于激光最终瞄准的机动平台。该平台在秋季的测量中得到了成功的应用，提供了关键的激光对准辅助。关于JSPS奖学金的主要研究项目，在染料和钛：蓝宝石组合系统上确定了锇和钨的多个潜在电离方案。在应用这些计划的预期中，PALIS系统内的共振电离过程已经利用速率方程进行了模拟，以确定影响的因素，并探测电离效率。这些模拟将是非常宝贵的，当进行高分辨率RIS利用注入锁定钛：蓝宝石激光器，最近委托在离线条件下与锆在合作与名古屋大学。完成JSPS奖学金后不久，我开始了芬兰学院资助的3年在芬兰的位置。该职位包括为日本研究提供资金，从而能够直接继续在JSPS奖学金下开始的研究项目。

项目成果

A narrowband injection-locked Titanium:Sapphire laser system for precision laser resonance ionization spectroscopy

用于精密激光共振电离光谱的窄带注入锁定钛宝石激光系统

• 发表时间: 2016
• 作者: T. Sonoda;T. Tsubota;M. Wada;I. Katayama;T.M. Kojima;M. Reponen;M. Reponen
• 通讯作者: M. Reponen

Optical pumping and resonance ionization of trapped ions at IGISOL

IGISOL 捕获离子的光泵浦和共振电离

• 发表时间: 2014
• 作者: T. Sonoda;T. Tsubota;M. Wada;I. Katayama;T.M. Kojima;M. Reponen;M. Reponen;M. Reponen;M. Reponen;M. Reponen
• 通讯作者: M. Reponen

First online multireflection time-of-flight mass measurements of isobar chains produced by fusion-evaporation reaction: Toward identification of superheavy elements via mass spectroscopy

首次对聚变蒸发反应产生的等量异位素链进行在线多重反射飞行时间质量测量：通过质谱法识别超重元素

• 发表时间: 2017
• 期刊: Physical Review
• 作者: P. Schury;M. Wada;Y. Ito;D. Kaji;F. Arai;M. MacCormick;I. Murray;H. Haba;S. Jeong;S. Kimura;H. Koura;H. Miyatake;K. Morimoto;K. Morita;A. Ozawa;M. Rosenbusch;M. Reponen;P.-A. Soederstroem;A. Takamine;T. Tanaka;H. Wollnik
• 通讯作者: H. Wollnik

A narrowband injection-locked Titanium:Sapphire laser system for precision laser resonance ionization spectroscopy at the SLOWRI/PALIS -facility

SLOWRI/PALIS 设施中用于精密激光共振电离光谱的窄带注入锁定钛宝石激光系统

• 发表时间: 2015
• 作者: T. Sonoda;T. Tsubota;M. Wada;I. Katayama;T.M. Kojima;M. Reponen;M. Reponen;M. Reponen
• 通讯作者: M. Reponen

A gas circulation and purification system for gas-cell-based low-energy RI-beam production

用于基于气体电池的低能RI光束生产的气体循环和净化系统

• DOI: 10.1063/1.4953111
• 发表时间: 2016
• 期刊: Review of Scientific Instruments
• 影响因子: 1.6
• 作者: T. Sonoda;T. Tsubota;M. Wada;I. Katayama;T.M. Kojima;M. Reponen
• 通讯作者: M. Reponen