TY - JOUR
T1 - Combining experiments and relativistic theory for establishing accurate radiative quantities in atoms: The lifetime of the 2P3/2 state in Ca40+
AU - Meir, Ziv
AU - Sinhal, Mudit
AU - Safronova, Marianna S
AU - Willitsch, Stefan
PY - 2020/1/14
Y1 - 2020/1/14
N2 - We report a precise determination of the lifetime of the (4p)2P3/2 state of 40Ca+, τP3/2=6.639(42)ns, using a combination of measurements of the induced light shift and scattering rate on a single trapped ion. Good agreement with the result of a recent high-level theoretical calculation, 6.69(6) ns [M. S. Safronova et al., Phys. Rev. A 83, 012503 (2011)], but a 6-σ discrepancy with the most precise previous experimental value, 6.924(19) ns [J. Jin et al., Phys. Rev. Lett. 70, 3213 (1993)], is found. To corroborate the consistency and accuracy of the new measurements, relativistically corrected ratios of reduced-dipole-matrix elements are used to directly compare our result with a recent result for the P1/2 state, yielding a good agreement. The application of the present method to precise determinations of radiative quantities of molecular systems is discussed.
AB - We report a precise determination of the lifetime of the (4p)2P3/2 state of 40Ca+, τP3/2=6.639(42)ns, using a combination of measurements of the induced light shift and scattering rate on a single trapped ion. Good agreement with the result of a recent high-level theoretical calculation, 6.69(6) ns [M. S. Safronova et al., Phys. Rev. A 83, 012503 (2011)], but a 6-σ discrepancy with the most precise previous experimental value, 6.924(19) ns [J. Jin et al., Phys. Rev. Lett. 70, 3213 (1993)], is found. To corroborate the consistency and accuracy of the new measurements, relativistically corrected ratios of reduced-dipole-matrix elements are used to directly compare our result with a recent result for the P1/2 state, yielding a good agreement. The application of the present method to precise determinations of radiative quantities of molecular systems is discussed.
UR - http://www.scopus.com/inward/record.url?scp=85078572981&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.101.012509
DO - 10.1103/PhysRevA.101.012509
M3 - Article
SN - 2469-9926
VL - 101
JO - Physical review. A
JF - Physical review. A
IS - 1
M1 - 012509
ER -