Mass selective laser cooling of 229Th3+ in a multisectional linear Paul trap loaded with a mixture of thorium isotopes

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

doi:10.1177/1469066717718368

Mass selective laser cooling of ²²⁹Th³⁺ in a multisectional linear Paul trap loaded with a mixture of thorium isotopes

Eur J Mass Spectrom (Chichester). 2017 Aug;23(4):136-139. doi: 10.1177/1469066717718368.

Authors

Petr V Borisyuk¹, Sergey P Derevyashkin¹, Ksenia Yu Khabarova^{2

3}, Nikolay N Kolachevsky^{1

2

3}, Yury Yu Lebedinsky¹, Sergey S Poteshin¹, Alexey A Sysoev¹, Evgeny V Tkalya^{1

4

5}, Dmitry O Tregubov^{1

2

3}, Viktor I Troyan¹, Oleg S Vasiliev¹, Valery P Yakovlev¹, Valery I Yudin⁶

Affiliations

¹ 1 National Research Nuclear University MEPhI, Moscow, Russian Federation.
² 2 P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia.
³ 3 Moscow Institute of Physics and Technology (State University), Dolgoprudny, Russia.
⁴ 4 Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics (MSU SINP), Moscow, Russia.
⁵ 5 Nuclear Safety Institute of the Russian Academy of Sciences (IBRAE RAN), Moscow, Russia.
⁶ 6 Department of Physics, Novosibirsk State University, Novosibirsk, Russia.

PMID: 29028395
DOI: 10.1177/1469066717718368

Abstract

We consider an experiment on trapping and laser cooling of ²²⁹Th³⁺ ions in a linear Paul trap in the presence of undesirable impurities such as ions of the radioactive isotope ²²⁸Th³⁺. We suggest a method of separating these impurities by means of selective laser cooling utilizing the isotope shift of cooling transitions in ²²⁹Th³⁺ and ²²⁸Th³⁺ ions. According to our estimation, the isotope shift is equal to 3.4 GHZ and makes laser separation of these isotopes possible.

Keywords: Frequency standards; ion trap; isotope separation; isotope shift; laser cooling; nuclear transition; optical clocks; thorium.

Publication types

Research Support, Non-U.S. Gov't