Axion dark matter detection by laser spectroscopy of ultracold molecular oxygen: a proposal

Year: 2015

Authors: Santamaria L., Braggio C., Carugno G., Di Sarno V., Maddaloni P., Ruoso G.

Autors Affiliation: CNR-INO, Istituto Nazionale di Ottica, Via Campi Flegrei 34, I-80078 Pozzuoli, Italy;
Dipartimento di Fisica “G. Galilei”, Università di Padova, Via F. Marzolo 8, I-35131 Padova, Italy;
INFN, Istituto Nazionale di Fisica Nucleare, Sez. di Firenze, Via G. Sansone 1, I-50019 Sesto Fiorentino, Italy;
INFN, Laboratori Nazionali di Legnaro, Viale delł’Università 2, I-35020 Legnaro, Italy

Abstract: Generalizing Sikivie’s approach (Sikivie 2014 Phys. Rev. Lett.113 201301), according to which dark matter axions may induce transitions between Zeeman states in an atomic system, an experiment based on a molecular gas is proposed for a search in the axion mass range between 1.4 and 1.9 meV. In particular, a 16O2 sample is brought to the temperature of 280m Kvia buffer-gas cooling and then subjected to an external magnetic field; axion-driven transitions are eventually detected by resonanceenhanced multi-photon ionization spectroscopy.


Volume: 17      Pages from: 113025-1  to: 113025-7

KeyWords: Galaxies; Ionization of gases; Laser spectroscopy; Photoionization; Atomic system; Buffer gas cooling; Dark matter; Dark matter detection; External magnetic field; Molecular gas; Multiphoton ionization; Resonance enhanced; Molecular oxygen
DOI: 10.1088/1367-2630/17/11/113025

Citations: 20
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