1. General introduction and presentation of the tables

• the wavelength (in A) deduced from the experimental energy levels. These wavelengths are given in air above 2000 A and in vacuum below that limit;
  
  
• the lower level of the transition represented by its experimental value (in cm^-1), its parity ((e) for even and (o) for odd) and its J-value. Level energies are taken from the NIST compilation (W.C. Martin, R. Zalubas and L. Hagan, Atomic Energy Levels - The Rare-Earth Elements, NBS-NSRDS 60, 1978) except when otherwise indicated;
  
  
• the upper level of the transition presented in the same way as for the lower level;
  
  
• the calculated oscillator strength, log gf, where g=2J+1 is the statistical weight of the lower level of the transition. More details about the computational procedure are given in the different publications listed below. Only transitions for which log gf > -4.0 are reported in the tables. For some ions, experimental oscillator strengths or normalized oscillator strengths using measured lifetimes are given. In these cases, "EXPT" or "NORM" appears in the last column of the tables;
  
  
• the calculated transition probability, gA in s^-1, where g=2J+1 is the statistical weight of the upper level of the transition. For some ions, experimental gA-values or normalized gA-values using measured lifetimes are given. In these cases, "EXPT" or "NORM" appears in the last column of the tables;
  
  
• the cancellation factor, CF, as defined by Cowan (1981). Small values of this factor (typically CF < 0.01) indicate transitions affected by severe cancellation effects.
  
  

2. Publications related to rare-earth elements

1. E. Biémont, J.-F. Dutrieux, I. Martin and P. Quinet,
   "Lifetime calculations in Yb II",
   J. Phys. B: At. Mol. Opt. Phys. 31, 3321-3333 (1998). (Abstract)
   
   
2. E. Biémont and P. Quinet,
   "Theoretical study of the 4f¹⁴6s ²S_1/2- 4f¹³6s^{2 2}F_7/2 E3 transition in Yb II",
   Phys. Rev. Lett. 81, 3345-3346 (1998). (Abstract)
   
   
3. P. Quinet, P. Palmeri and E. Biémont,
   "On the use of the Cowan's code for atomic structure calculations in singly ionized lanthanides",
   J. Quant. Spectrosc. Rad. Transfer 62, 625-646 (1999). (Abstract)
   
   
4. E. Biémont, J.-F. Dutrieux, I. Martin and P. Quinet,
   "Ion traps and lifetime calculations in Yb II",
   Proc. of the 6th ASOS Conference, Victoria, Canada, pp. 12--14 (1999).
   
   
5. P. Quinet, P. Palmeri and E. Biémont,
   "On the use of the Cowan code for atomic structure calculations in singly ionized lanthanides",
   Proc. of the 6th ASOS Conference, Victoria, Canada, pp. 126--128 (1999).
   
   
6. Z.S. Li, S. Svanberg, P. Quinet, X. Tordoir and E. Biémont,
   "Lifetime measurements in Yb II with time-resolved laser spectroscopy",
   J. Phys. B: At. Mol. Opt. Phys. 32, 1731-1737 (1999). (Abstract)
   
   
7. P. Quinet, P. Palmeri, E. Biémont, M.M. McCurdy, G. Rieger, E.H. Pinnington, M.E. Wickliffe and J.E. Lawler,
   "Experimental and theoretical radiative lifetimes, branching fractions and oscillator strengths in Lu II",
   Mon. Not. R. Astr. Soc. 307, 934-940 (1999). (Abstract)
   
   
8. E. Biémont, Z.S. Li, P. Palmeri and P. Quinet,
   "Radiative lifetimes in La III and oscillator strengths in La III and Lu III",
   J. Phys. B: At. Mol. Opt. Phys. 32, 3409-3419 (1999). (Abstract)
   
   
9. P. Palmeri, P. Quinet, J.-F. Wyart and E. Biémont,
   "Theoretical lifetimes and oscillator strengths in Ce II. Application to the chemical composition of the sun",
   Phys. Scr. 61, 323-334 (2000). (Abstract)
   
   
10. P. Palmeri, P. Quinet, Y. Frémat, J.-F. Wyart and E. Biémont,
    "Theoretical oscillator strengths in Pr III and application to some CP stars",
    Astrophys. J. Suppl. Ser. 129, 367-376 (2000). (Abstract)
    
    
11. E. Biémont, P. Palmeri and P. Quinet,
    "A new database of astrophysical interest",
    Proc. Conf. A New Millenium for Galaxy Morphology, South Africa, Astrophys. Space Sci. 269-270, 635-637 (1999) (Abstract)
    
    
12. J.A. Fedchak, E.A. Den Hartog, J.E. Lawler, P. Palmeri, P. Quinet and E. Biémont,
    "Experimental and theoretical radiative lifetimes, branching fractions and oscillator strengths for Lu I and experimental lifetimes for Lu II and Lu III",
    Astrophys. J. 542, 1109-1118 (2000). (Abstract)
    
    
13. E. Biémont, H.P. Garnir, T. Bastin, P. Palmeri, P. Quinet, Z.S. Li, Z.G. Zhang, V. Lokhnygin and S. Svanberg,
    "Radiative lifetime measurements and transition probabilities of astrophysical interest in Er III",
    Mon. Not. R. Astron. Soc. 321, 481-486 (2001). (Abstract)
    
    
14. J.F. Wyart, W.U.L. Tchang-Brillet, N. Spector, P. Palmeri, P. Quinet and E. Biémont,
    "Extended analysis of the spectrum of triply-ionized ytterbium (Yb IV) and transition probabilities",
    Phys. Scr. 63, 113-121 (2001). (Abstract)
    
    
15. Z.G. Zhang, S. Svanberg, Z. Jiang, P. Palmeri, P. Quinet and E. Biémont,
    "Natural radiative lifetimes in Ce II",
    Phys. Scr. 63, 122-127 (2001). (Abstract)
    
    
16. E. Biémont, H.P. Garnir, P. Palmeri, P. Quinet, Z.S. Li, Z.G. Zhang and S. Svanberg,
    "Core-polarization effects and radiative lifetime measurements in Pr III",
    Phys. Rev. A 64, 022503 (2001).
    
    
17. Z.S. Li, Z.G. Zhang, V. Lokhnygin, S. Svanberg, T. Bastin, E. Biémont, H.P. Garnir, P. Palmeri and P. Quinet,
    "Radiative lifetime measurements in Tm III with time-resolved laser spectroscopy and comparisons with HFR calculations",
    J. Phys. B: At. Mol. Opt. Phys. 34, 1349-1359 (2001).
    
    
18. E. Biémont, H.P. Garnir, Z.S. Li, V. Lokhnygin, P. Palmeri, P. Quinet, S. Svanberg, J.-F. Wyart and Z.G. Zhang,
    "Experimental and theoretical energy levels, transition probabilities and radiative lifetimes in Yb III",
    J. Phys. B: At. Mol. Opt. Phys. 34, 1869-1876 (2001).
    
    
19. E. Biémont, P. Palmeri, P. Quinet, G. Paquin, Z.G. Zhang, G. Somesfalean and S. Svanberg,
    "Measurement of radiative lifetimes and determination of transition probabilities of astrophysical interest in Ho III",
    Mon. Not. R. Astr. Soc. 328, 1085-1090 (2001).
    
    
20. Z.G. Zhang, G. Somesfalean, S. Svanberg, P. Palmeri, P. Quinet and E. Biémont,
    "Radiative lifetime measurements and oscillator strengths of astrophysical interest in Ho III",
    Astron. Astrophys. 384, 364-370 (2002).
    
    
21. Z.G. Zhang, S. Svanberg, P. Palmeri, P. Quinet and E. Biémont,
    "Measurement of lifetimes by laser-induced fluorescence and determination of transition probabilities of astrophysical interest in Nd III",
    Astron. Astrophys. 385, 724-732 (2002).
    
    
22. Z.G. Zhang, S. Svanberg, P. Quinet, P. Palmeri and E. Biémont,
    "Time-resolved laser spectroscopy of multiply ionized atoms - Natural radiative lifetimes in Ce IV",
    Phys. Rev. Lett. 87, 273001 (2001).
    
    
23. Z.G. Zhang, Z.S. Li, S. Svanberg, P. Palmeri, P. Quinet and E. Biémont,
    "Experimental and theoretical lifetimes in Yb III",
    Eur. Phys. J. D 15, 301-305 (2001).
    
    
24. P. Quinet, P. Palmeri, E. Biémont, Z.S. Li, Z.G. Zhang and S. Svanberg,
    "Radiative lifetime measurements and transition probability calculations in lanthanide ions",
    J. Alloys Comp. 344, 255-259 (2002).
    
    
25. Z.G. Zhang, S. Svanberg, P. Palmeri, P. Quinet and E. Biémont,
    "Experimental and theoretical studies of Dy III: radiative lifetimes and oscillator strengths of astrophysical interest",
    Mon. Not. R. Astron. Soc. 334, 1-10 (2002).
    
    
26. E. Biémont, H.P. Garnir, P. Quinet, S. Svanberg and Z.G. Zhang,
    "Time-resolved laser-induced fluorescence lifetime measurements and theoretical transition probabilities in Tb III",
    Phys. Rev. A 65, 052502 (2002).
    
    
27. E. Biémont, P. Palmeri, P. Quinet, Z.G. Zhang and S. Svanberg,
    "Doubly ionized thorium: laser lifetime measurements and transition probability determination of interest in cosmochronology",
    Astrophys. J. 567, 1276-1283 (2002).
    
    
28. E. Biémont, P. Palmeri, P. Quinet, S. Svanberg and Z.G. Zhang,
    "Lifetime measurements in doubly ionized uranium",
    J. Phys. B: At. Mol. Opt. Phys. 35, 1701-1705 (2002).
    
    
29. E. Biémont, P. Quinet and T.A. Ryabchikova,
    "Core-polarization effects in doubly ionized cerium (Ce III) for transitions of astrophysical interest",
    Mon. Not. R. Astr. Soc. 336, 1155-1160 (2002).
    
    
30. E. Biémont, G. Kohnen and P. Quinet,
    "Transition probabilities in Gd III",
    Astron. Astrophys. 393, 717-720 (2002).
    
    
31. E. Biémont, P. Quinet, Z. Dai, Z. Jiang, Z.G. Zhang, H. Xu and S. Svanberg,
    "Lifetime measurements and calculations in singly ionized ytterbium",
    J. Phys. B: At. Mol. Opt. Phys. 35, 4743-4749 (2002).
    
    
32. M. Reyniers, H. Van Winckel, E. Biémont and P. Quinet,
    "Cerium: the lithium substitute in post-AGB stars",
    Astron. Astrophys. 395, L35-L38 (2002).
    
    
33. H. Xu, Z. Jiang, Z.G. Zhang, Z. Dai, S. Svanberg, P. Quinet and E. Biémont,
    "Radiative lifetime measurements in Er II by time-resolved laser spectroscopy",
    J. Phys. B: At. Mol. Opt. Phys. 36, 1771-1781 (2003).
    
    
34. E. Biémont, H.P. Garnir, U. Litzén, K. Nielsen, P. Quinet, S. Svanberg, G. Wahlgren and Z.G. Zhang,
    "Radiative lifetime and oscillator strength determinations in Sm III",
    Astron. Astrophys. 399, 343-349 (2003).
    
    
35. Z. Dai, Z. Jiang, H. Xu, Z.G. Zhang, S. Svanberg, E. Biémont, P.H. Lefèbvre and P. Quinet,
    "Time-resolved laser-induced fluorescence measurements of Rydberg states in Lu I and comparison with theory",
    J. Phys. B: At. Mol. Opt. Phys. 36, 479-487 (2003).
    
    
36. E. Biémont and P. Quinet,
    "Recent advances in study of lanthanide atoms and ions",
    Phys. Scr. T105, 38-54 (2003).
    
    
37. P. Quinet and E. Biémont,
    "Radiative lifetime, oscillator strength and Landé factor calculations in doubly ionized europium (Eu III)",
    Mon. Not. R. Astr. Soc. 340, 463-467 (2003).
    
    
38. E. Biémont, P.H. Lefèbvre, P. Quinet, S. Svanberg and H. Xu,
    "Radiative lifetime measurements and oscillator strength determination for transitions in singly ionized praseodymium (Pr II)",
    Eur. Phys. J. D 27, 33-41 (2003).
    
    
39. H. Xu, S. Svanberg, R.D. Cowan, P.H. Lefèbvre, P. Quinet and E. Biémont,
    "Theoretical and experimental lifetime determination in singly ionized neodymium (Nd II)",
    Mon. Not. R. Astr. Soc. 346, 433-440 (2003).
    
    
40. H. Xu, S. Svanberg, P. Quinet, H.P. Garnir and E. Biémont,
    "Time-resolved laser-induced fluorescence lifetime measurements and relativistic Hartree-Fock calculations of transition probabilities in Sm II",
    J. Phys. B: At. Mol. Opt. Phys. 36, 4773-4787 (2003).
    
    
41. P. Quinet and E. Biémont,
    "Landé g-factors for experimentally determined energy levels in doubly ionized lanthanides",
    At. Data Nucl. Data Tables 87, 207-230 (2004).
    
    
42. E. Biémont, P. Quinet, S. Svanberg and H.L. Xu,
    "Experimental lifetime determination in neutral praseodymium (Pr I) and neodymium (Nd I)",
    J. Phys. B: At. Mol. Opt. Phys. 37, 1381-1389 (2004).
    
    
43. E. Biémont, P. Quinet, S. Svanberg and H.L. Xu,
    "Lifetime measurements and calculations in La I",
    Eur. Phys. J. D 30, 157-162 (2004).
    
    
44. E. Biémont and P. Quinet,
    "A database of astrophysical interest covering the UV region",
    J. Electr. Spectrosc. Rel. Phen. (in press, 2004).
    
    

3. Database

Lanthanum (Z = 57)........ La III

Cerium (Z = 58)............... Ce II, Ce III

Praseodymium (Z = 59)... Pr II, Pr III

Neodymium (Z = 60)....... Nd II, Nd III

Promethium (Z = 61).......

Samarium (Z = 62).......... Sm II, Sm III

Europium (Z = 63)........... Eu III

Gadolinium (Z = 64)........ Gd III

Terbium (Z = 65)............. Tb III

Dysprosium (Z = 66)........ Dy III

Holmium (Z = 67)............ Ho III

Erbium (Z = 68)............... Er II, Er III

Thulium (Z = 69)............. Tm II, Tm III

Ytterbium (Z = 70).......... Yb II, Yb II (IR), Yb III, Yb IV

Lutetium (Z = 71)........... Lu I, Lu II, Lu III

Thorium (Z = 90)............ Th III