Energies and lifetimes of the 9p and 10p excited states in atomic francium

Fuente: arXiv
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Autores principales: Lassègues, P., Ajayakumar, A., Athanasakis-Kaklamanakis, M., Ahmad, O., Au, M., Berbalk, J., Bettaney, D., Borne, B. van den, Chakraborty, A., Cocolios, T. E., Duggan, M., Fajardo, C., Flanagan, K. T., Ruiz, R. F. Garcia, de Groote, R., Gonzalez-Acevedo, D., Kastberg, A., Koszorús, A., Lalanne, L., Lynch, K. M., McLeroy, D. T., McGlone, A., Neyens, G., Nies, L., Quanjel, L., Raggio, A., Reilly, J., Sahoo, B. K., Snikeris, J., Warbinek, J., Wilkins, S. G., Yang, X. F.
Formato: Preprint
Publicado: 2026
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author Lassègues, P.
Ajayakumar, A.
Athanasakis-Kaklamanakis, M.
Ahmad, O.
Au, M.
Berbalk, J.
Bettaney, D.
Borne, B. van den
Chakraborty, A.
Cocolios, T. E.
Duggan, M.
Fajardo, C.
Flanagan, K. T.
Ruiz, R. F. Garcia
de Groote, R.
Gonzalez-Acevedo, D.
Kastberg, A.
Koszorús, A.
Lalanne, L.
Lynch, K. M.
McLeroy, D. T.
McGlone, A.
Neyens, G.
Nies, L.
Quanjel, L.
Raggio, A.
Reilly, J.
Sahoo, B. K.
Snikeris, J.
Warbinek, J.
Wilkins, S. G.
Yang, X. F.
author_facet Lassègues, P.
Ajayakumar, A.
Athanasakis-Kaklamanakis, M.
Ahmad, O.
Au, M.
Berbalk, J.
Bettaney, D.
Borne, B. van den
Chakraborty, A.
Cocolios, T. E.
Duggan, M.
Fajardo, C.
Flanagan, K. T.
Ruiz, R. F. Garcia
de Groote, R.
Gonzalez-Acevedo, D.
Kastberg, A.
Koszorús, A.
Lalanne, L.
Lynch, K. M.
McLeroy, D. T.
McGlone, A.
Neyens, G.
Nies, L.
Quanjel, L.
Raggio, A.
Reilly, J.
Sahoo, B. K.
Snikeris, J.
Warbinek, J.
Wilkins, S. G.
Yang, X. F.
contents We present the first measurement of 9p 2P1/2,3/2 and 10p 2P1/2,3/2 excited levels absolute wavenumbers and radiative lifetime in francium. We used the Collinear Resonance Ionization Spectroscopy (CRIS) technique, applied on a beam of 221Fr atoms. Prior to this work, no experimental data existed for francium p-states with n > 8. The results provide a precision experimental test of relativistic coupled-cluster theory for the heaviest alkali, showing good agreement for lifetimes and relative excitation energies, despite a residual global offset in absolute energies.
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publishDate 2026
record_format arxiv
spellingShingle Energies and lifetimes of the 9p and 10p excited states in atomic francium
Lassègues, P.
Ajayakumar, A.
Athanasakis-Kaklamanakis, M.
Ahmad, O.
Au, M.
Berbalk, J.
Bettaney, D.
Borne, B. van den
Chakraborty, A.
Cocolios, T. E.
Duggan, M.
Fajardo, C.
Flanagan, K. T.
Ruiz, R. F. Garcia
de Groote, R.
Gonzalez-Acevedo, D.
Kastberg, A.
Koszorús, A.
Lalanne, L.
Lynch, K. M.
McLeroy, D. T.
McGlone, A.
Neyens, G.
Nies, L.
Quanjel, L.
Raggio, A.
Reilly, J.
Sahoo, B. K.
Snikeris, J.
Warbinek, J.
Wilkins, S. G.
Yang, X. F.
Atomic Physics
We present the first measurement of 9p 2P1/2,3/2 and 10p 2P1/2,3/2 excited levels absolute wavenumbers and radiative lifetime in francium. We used the Collinear Resonance Ionization Spectroscopy (CRIS) technique, applied on a beam of 221Fr atoms. Prior to this work, no experimental data existed for francium p-states with n > 8. The results provide a precision experimental test of relativistic coupled-cluster theory for the heaviest alkali, showing good agreement for lifetimes and relative excitation energies, despite a residual global offset in absolute energies.
title Energies and lifetimes of the 9p and 10p excited states in atomic francium
topic Atomic Physics
url https://arxiv.org/abs/2604.12467