Laser resonance photoionization spectroscopy of Rydberg levels in Fr

Journal Article · Mon Sep 21 00:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.1274· OSTI ID:5344558

Andreev, S V; Letokhov, V S; Mishin, V I

We investigated for the first time the high-lying Rydberg levels in the rare radioactive element francium (Fr). The investigations were conducted by the highly sensitive laser resonance atomic photoionization technique with Fr atoms produced at a rate of about 10/sup 3/ atoms/s in a hot cavity. We measured the wave numbers of the 7p/sup 2/P/sub 3/2/..-->..nd/sup 2/D (n = 22--33) and 7p/sup 2/P/sub 3/2/..-->..ns/sup 2/S (n = 23, 25--27,29--31) transitions and found the binding energy of the 7p/sup 2/P/sub 3/2/ state to be T = -18 924.8(3) cm/sup -1/, which made it possible to establish accurately the ionization potential of Fr.

• Research Organization: Institute of Spectroscopy, USSR Academy of Sciences, 142092 Troitsk, Moscow Region, Union of Soviet Socialist Republics
• OSTI ID: 5344558
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:12; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
BINDING ENERGY
ELEMENTS
ENERGY
ENERGY LEVELS
EXCITED STATES
FRANCIUM
IONIZATION
LASER SPECTROSCOPY
METALS
PHOTOIONIZATION
RADIOACTIVITY
RESONANCE
RYDBERG STATES
SPECTROSCOPY