Multielectron spectroscopy : energy levels of K<sup><em>n</em></sup>⁺ and Rb<sup><em>n</em></sup>⁺ ions (<em>n</em> = 2, 3, 4)

Khalal, M A; Soronen, J; Jänkälä, K; Huttula, S-M; Huttula, M; Bizau, J-M; Cubaynes, D; Guilbaud, S; Ito, K; Andric, L; Feng, J; Lablanquie, P; Palaudoux, J; Penent, F (2017-10-30)
 
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URL:
https://doi.org/10.1088/1361-6455/aa90d6

Khalal, M A
Soronen, J
Jänkälä, K
Huttula, S-M
Huttula, M
Bizau, J-M
Cubaynes, D
Guilbaud, S
Ito, K
Andric, L
Feng, J
Lablanquie, P
Palaudoux, J
Penent, F
IOP Publishing
30.10.2017

M A Khalal et al 2017 J. Phys. B: At. Mol. Opt. Phys.50 225003

https://rightsstatements.org/vocab/InC/1.0/
© 2017 IOP Publishing Ltd.
https://rightsstatements.org/vocab/InC/1.0/
doi:https://doi.org/10.1088/1361-6455/aa90d6
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https://urn.fi/URN:NBN:fi-fe201804036296
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Abstract

A magnetic bottle time-of-flight spectrometer has been used to perform spectroscopy of K n⁺ and Rb n⁺ states with ionization degrees n of 2, 3 and 4. Energy levels are directly measured by detecting in coincidence the n electrons that are emitted as a result of single photon absorption. Experimental results are compared with the energies from the NIST atomic database and ab initio multiconfiguration Dirac–Fock calculations. Previously unidentified 3p ⁴(³P)3d ¹ ⁴D energy levels of K²⁺ are assigned.

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