Hyperfine Structure of High Lying Levels of Tm I

Başar, Günay; Öztürk, I. K.; Acar, F. Gülay; Kröger, S.

doi:10.1238/physica.regular.071a00159

Cited by 8 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The hyperfine structure of excited levels in thulium is measured by different methods and the following references summarize most of the available data [18,19,20,21,22]. The level with the energy E = 24 349 cm −1 has been previously studied by the optogalvanic spectroscopy in the hollow cathode discharge [21] and its HFS frequency has been determined.…”

Section: Saturation Absorption Spectroscopymentioning

confidence: 99%

Blue laser cooling transitions in Tm I

et al. 2007

View full text Add to dashboard Cite

We have studied possible candidates for laser cooling transitions in $^{169}$Tm in the spectral region 410 -- 420 nm. By means of saturation absorption spectroscopy we have measured the hyperfine structure and rates of two nearly closed cycling transitions from the ground state $4\textrm{f}^{13}6\textrm{s}^2(^2\textrm{F}_0)(J_g=7/2)$ to upper states $4\textrm{f}^{12}(^3\textrm{H}_5)5\textrm{d}_{3/2}6\textrm{s}^2(J_e=9/2)$ at 410.6 nm and $4\textrm{f}^{12}(^3\textrm{F}_4)5\textrm{d}_{5/2}6\textrm{s}^2(J_e=9/2)$ at 420.4 nm and evaluated the life times of the excited levels as 15.9(8) ns and 48(6) ns respectively. Decay rates from these levels to neighboring opposite-parity levels are evaluated by means of Hartree-Fock calculations. We conclude, that the strong transition at 410.6 nm has an optical leak rate of less then $2\cdot10^{-5}$ and can be used for efficient laser cooling of $^{169}$Tm from a thermal atomic beam. The hyperfine structure of two other even-parity levels which can be excited from the ground state at 409.5 nm and 418.9 nm is also measured by the same technique. In addition we give a calculated value of $7(2)$ s$^{-1}$ for the rate of magnetic-dipole transition at 1.14 $\mu$m between the fine structure levels $(J_g=7/2)\leftrightarrow(J'_g=5/2)$ of the ground state which can be considered as a candidate for applications in atomic clocks.Comment: 8 pages, 5 figure

show abstract

Section: Saturation Absorption Spectroscopymentioning

confidence: 99%

Blue laser cooling transitions in Tm I

et al. 2007

View full text Add to dashboard Cite

show abstract

“…Martin et al [8] summarized all previous investigations. Different laser spectroscopic methods for hfs measurements have been used by Van Leeuwen et al [9], Angelova et al [10], Childs et al [11] Pfeufer [12][13][14], Krüger [15], Kronfeldt et al [16], Kröger [17], Kröger et al [18], Zhan-Kui et al [19], Zhou et al [20], Başar et al [21], and Fedorov et al [22]. Tripplet et al [23] investigated the Mössbauer effect of Tm.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the hyperfine structure of Tm I with Fourier transform spectroscopy, part A: In the visible wavelength range (400–700 nm)

Parlatan

Öztürk

Başar

et al. 2022

Journal of Quantitative Spectroscopy and Radiative Transfer

Self Cite

View full text Add to dashboard Cite

“…* revised value, in [20] given with 𝐴 = −439.38(1.00) MHz ** revised value, in [15] given with 𝐴 = −2263.3 (3.9) MHz Table 4: New magnetic-dipole hyperfine-structure constant, A for levels of odd parity of Tm I. [21] given with 𝐴 = −197(5) MHz The resulting magnetic-dipole hyperfine-structure constants 𝐴 are listed in Tables 3 and 4 for the levels of even and odd parity, respectively. The wave number given in the third column specifies the line that was used to determine the hyperfine constant 𝐴 exp .…”

Section: Hyperfine-structure Analysis and Resultsmentioning

confidence: 99%