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Energies are given in cm\(^{-1}\). See this link for conversion factors. Electric matrix elements are given in atomic units. Magnetic dipole matrix elements are given in Bohr magnetons, \(\mu_B\). The values of magnetic-dipole hyperfine constants A are listed in MHz. Dipole polarizabilities \(\alpha\) are given in atomic units, \(a_0^3\), where \(a_0\) is the Bohr radius. The atomic units for \(\alpha\) can be converted to SI units via \(\alpha /h \rm{[Hz/(V/m)^2]}\)\(=2.48832 \times 10^{-8} \alpha \) [a.u.], where the conversion coefficient is \( 4\pi \epsilon_0 a^3_0/h \) and the Planck constant \(h\) is factored out.

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Data are taken from, “M. S. Safronova, V. A. Dzuba, V. V. Flambaum, U. I. Safronova, S. G. Porsev, and M. G. Kozlov Phys. Rev. A 90, 052509 (2014), DOI: https://doi.org/10.1103/PhysRevA.90.052509", unless noted otherwise.

Note:
1) Transition types ‘M1’, ‘M2’, ‘E1’ and ‘E2’ stand for magnetic dipole, magnetic quadrupole, electric dipole and electric quadrupole transition, respectively.
2) The disagreement of theory and experimental energies was discussed in detail in, “Phys. Rev. A 90, 052509 (2014)”, indicating a problem with experimental data.

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S. S. Churilov, Y. N. Joshi, and A. N. Ryabtsev, Phys. Scr. 71, 43 (2005),
DOI: https://doi.org/10.1088/0031-8949/71/1/007. Close

State	Energy	Energy	\(\ \lambda \)	\(\ \lambda \)	\( \alpha \)-variation sensitivity q	Enhancement factor K	Lifetime
\(\ \)	\(\ \rm{cm}^{-1} \)	\(\ \rm{cm}^{-1} \)	nm	nm	\(\ \rm{cm}^{-1} \)	\(\ \)	s
$$5s^2 \ ^1S_0$$	0	0	$$ $$	$$ $$	0	$$ $$	$$ $$
$$5s4f \ ^3F_2$$	79469(600)	77162	125.8(9)	129.6	101461	2.6	7.622 \(\ \times 10^{10} \)
$$5s4f \ ^3F_3$$	80769(610)	78443	123.8(9)	127.5	102325	2.5	18.9
$$5s4f \ ^3F_4$$	83730(650)	81440	119.4(9)	122.8	105340	2.5	2.042
$$5s4f \ ^1F_3$$	89951(640)	87312	111.2(8)	114.5	105827	2.4	0.41
$$5s5p \ ^3P_0$$	159667(1020)	156417	62.6(4)	63.9	14175	0.2	7.905 \(\ \times 10^{-3} \)
$$5s5p \ ^3P_1$$	168547(800)	165482	59.3(3)	60.4	19465	0.2	1.710 \(\ \times 10^{-9} \)
$$5s5p \ ^3P_2$$	207976(1400)	204685	48.1(3)	48.9			6.054 \(\ \times 10^{-4} \)
$$5s5p \ ^1P_1$$	245594(320)	245748	40.7(1)	40.7			5.136 \(\ \times 10^{-11} \)

Transition	Type	Transition energy	\(\ \lambda \)	Matrix element	Transition rate
\(\ \)	\(\ \)	\(\ \rm{cm}^{-1} \)	nm	\(\ \)	\(\ \rm{s}^{-1} \)
$$5s2 \ ^1S_{0}-5s4f\ ^3F_{2}$$	M2	79469	125.8	0.00012 \(\ \mu_B \)	1.312 \(\ \times 10^{-11} \)
$$5s4f \ ^3F_{2}- 5s4f\ ^3F_{3}$$	M1	1300	7692	2.49401 \(\ \mu_B \)	5.266 \(\ \times 10^{-2} \)
$$5s4f \ ^3F_{3}- 5s4f\ ^3F_{4}$$	M1	2961	3377	2.50909 \(\ \mu_B \)	4.898 \(\ \times 10^{-1} \)
$$5s4f \ ^3F_{2}- 5s4f\ ^3F_{4}$$	E2	4261	2347	0.07926 a.u.	1.098 \(\ \times 10^{-7} \)
$$5s4f \ ^3F_{2}- 5s4f\ ^1F_{3}$$	M1	10482	954.0	0.61326 \(\ \mu_B \)	1.669
$$5s4f \ ^3F_{4}- 5s4f\ ^1F_{3}$$	M1	6221	1607	0.61858 \(\ \mu_B \)	3.549 \(\ \times 10^{-1} \)
$$5s4f \ ^3F_{2}- 5s5p\ ^3P_{0}$$	E2	80198	124.7	0.58339 a.u.	1.265 \(\ \times 10^{2} \)
$$5s^2 \ ^1S_{0}- 5s5p\ ^3P_{1}$$	E1	168547	59.3	0.42601 a.u.	5.868 \(\ \times 10^{8} \)
$$5s4f \ ^3F_{4}- 5s5p\ ^3P_{2}$$	E2	124246	80.5	1.1409 a.u.	8.632 \(\ \times 10^{2} \)
$$5s^2 \ ^1S_{0}- 5s5p\ ^3P_{2}$$	M2	207976	48.1	5.972 \(\ \mu_B \)	4.138
$$5s4f \ ^3F_{2}- 5s5p\ ^3P_{2}$$	E2	128507	77.8	0.21718 a.u.	3.703 \(\ \times 10^{1} \)
$$5s5p \ ^3P_{0}- 5s5p\ ^3P_{2}$$	E2	48309	207.0	1.2316 a.u.	8.94
$$5s5p \ ^3P_{1}- 5s5p\ ^3P_{2}$$	M1	39429	253.6	1.49436 \(\ \mu_B \)	7.384 \(\ \times 10^{2} \)
$$5s2 \ ^1S_{0}- 5s5p\ ^1P_{1}$$	E1	245594	40.7	1.3951 a.u.	1.947 \(\ \times 10^{10} \)
$$5s4f \ ^1F_{3}- 5s5p\ ^1P_{1}$$	E2	155643	64.2	0.89639 a.u.	2.740 \(\ \times 10^{3} \)
$$5s5p \ ^3P_{0}- 5s5p\ ^1P_{1}$$	M1	85927	116.4	0.42382 \(\ \mu_B \)	1.024 \(\ \times 10^{3} \)
$$5s5p \ ^3P_{2}- 5s5p\ ^1P_{1}$$	M1	37618	265.8	0.47796 \(\ \mu_B \)	1.093 \(\ \times 10^{2} \)