High voltage determination and stabilization for collinear laser spectroscopy applications

Author:

König Kristian12ORCID,Köhler Finn1ORCID,Palmes Julian1ORCID,Badura Henrik3ORCID,Dockery Adam24ORCID,Minamisono Kei24ORCID,Meisner Johann3,Müller Patrick1ORCID,Nörtershäuser Wilfried15ORCID,Passon Stephan3ORCID

Affiliation:

1. Institut für Kernphysik, Department of Physics, Technische Universität Darmstadt 1 , 64289 Darmstadt, Germany

2. Facility for Rare Isotope Beams, Michigan State University 2 , East Lansing, Michigan 48824, USA

3. Physikalisch-Technische Bundesanstalt 3 , 38116 Braunschweig, Germany

4. Department of Physics and Astronomy, Michigan State University 4 , East Lansing, Michigan 48824, USA

5. Helmholtz Forschungsakademie Hessen für FAIR (HFHF), Campus Darmstadt 5 , Schlossgartenstr. 9, 64289 Darmstadt, Germany

Abstract

Fast beam collinear laser spectroscopy is the established method to investigate nuclear ground state properties such as the spin, the electromagnetic moments, and the charge radius of exotic nuclei. These are extracted with high precision from atomic observables, i.e., the hyperfine splitting and the isotope shift, which become possible due to a large reduction of the Doppler broadening by compressing the velocity width of the ion beam through electrostatic acceleration. With the advancement of experimental methods and applied devices, e.g., to measure and stabilize the laser frequency, the acceleration potential became the dominant systematic uncertainty contribution. To overcome this, we present a custom-built high-voltage divider, which was developed and tested at the German metrology institute, and a feedback loop that enabled collinear laser spectroscopy to be performed at a 100-kHz level. Furthermore, we describe the impact of field penetration into the laser–ion interaction region. This affects the determined isotope shifts and hyperfine splittings if Doppler tuning is applied, i.e., the ion beam energy is altered instead of scanning the laser frequency. Using different laser frequencies that were referenced to a frequency comb, the field penetration was extracted laser spectroscopically. This allowed us to define an effective scanning potential to still apply the faster and easier Doppler tuning without introducing systematic deviations.

Funder

Deutsche Forschungsgemeinschaft

Bundesministerium für Bildung und Forschung

National Science Foundation

Publisher

AIP Publishing

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3