Mass selective laser cooling of Th-229(3+) in a multisectional linear Paul trap loaded with a mixture of thorium isotopes

作者：Borisyuk Petr V; Derevyashkin Sergey P; Khabarova Ksenia Yu; Kolachevsky Nikolay N; Lebedinsky Yury Yu; Poteshin Sergey S; Sysoev Alexey A; Tkalya Evgeny V; Tregubov Dmitry O^*; Troyan Viktor I; Vasiliev Oleg S; Yakovlev Valery P; Yudin Valery I

来源：European Journal of Mass Spectrometry, 2017, 23(4): 136-139.

DOI：10.1177/1469066717718368

• Frequency standards
• optical clocks
• laser cooling
• thorium
• nuclear transition
• ion trap
• isotope shift
• isotope separation

We consider an experiment on trapping and laser cooling of Th-229(3+) ions in a linear Paul trap in the presence of undesirable impurities such as ions of the radioactive isotope Th-228(3+). We suggest a method of separating these impurities by means of selective laser cooling utilizing the isotope shift of cooling transitions in Th-229(3+) and Th-228(3+) ions. According to our estimation, the isotope shift is equal to 3.4 GHZ and makes laser separation of these isotopes possible.

• 出版日期2017-8