Research output: Contribution to journal › Article › peer-review
Laser spectroscopy of the y PJo 7 states of Cr i. / Norrgard, E. B.; Barker, D. S.; Eckel, S. P.; Porsev, S. G.; Cheung, C.; Kozlov, M. G.; Tupitsyn, I. I.; Safronova, M. S.
In: Physical Review A, Vol. 105, No. 3, 032812, 03.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Laser spectroscopy of the y PJo 7 states of Cr i
AU - Norrgard, E. B.
AU - Barker, D. S.
AU - Eckel, S. P.
AU - Porsev, S. G.
AU - Cheung, C.
AU - Kozlov, M. G.
AU - Tupitsyn, I. I.
AU - Safronova, M. S.
N1 - Publisher Copyright: © 2022 American Physical Society.
PY - 2022/3
Y1 - 2022/3
N2 - Here we report measured and calculated values of decay rates of the 3d4(D5)4s4p(Po3)yP2,3,4o7 states of Cr i. The decay rates are measured using time-correlated single-photon counting with roughly 1% total uncertainty. In addition, the isotope shifts for transitions between these states and the ground state are measured by laser induced fluorescence to roughly 0.5% uncertainty. The decay rate calculations are carried out by a hybrid approach that combines configuration interaction and the linearized coupled-cluster method (CI+all-order method). The measurements provide a much needed precision benchmark for testing the accuracy of the CI+all-order approach for such complicated systems with six valence electrons, allowing us to significantly expand its applicability. These measurements also demonstrate operation of a cryogenic buffer gas beam source for future cold molecule experiments.
AB - Here we report measured and calculated values of decay rates of the 3d4(D5)4s4p(Po3)yP2,3,4o7 states of Cr i. The decay rates are measured using time-correlated single-photon counting with roughly 1% total uncertainty. In addition, the isotope shifts for transitions between these states and the ground state are measured by laser induced fluorescence to roughly 0.5% uncertainty. The decay rate calculations are carried out by a hybrid approach that combines configuration interaction and the linearized coupled-cluster method (CI+all-order method). The measurements provide a much needed precision benchmark for testing the accuracy of the CI+all-order approach for such complicated systems with six valence electrons, allowing us to significantly expand its applicability. These measurements also demonstrate operation of a cryogenic buffer gas beam source for future cold molecule experiments.
UR - http://www.scopus.com/inward/record.url?scp=85127573519&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/6a084f64-115c-37a6-be92-7de426bf5619/
U2 - 10.1103/PhysRevA.105.032812
DO - 10.1103/PhysRevA.105.032812
M3 - Article
AN - SCOPUS:85127573519
VL - 105
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 3
M1 - 032812
ER -
ID: 95299973