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Spectra of even-parity highly excited states of the Sm atom have been systematically studied with two color three-step excitation and photoionization detection method. With two different excitation paths, the atom is resonantly excited to given bound states where it is detected by photoionization. The wavelength of the first laser is fixed at 627.50 nm or 624.41 nm so that the Sm atom can be excited to the two different intermediate states with the 4f66s6p configuration. Then the wavelength of the second laser is scanned from 440-700 nm to further excite the atom, so that the highly excited states in the 30040-38065 cm-1energy region can be populated. Based on precise calibration of wavelength and the selection rules, the level energies of 136 even-parity states and their relative line intensities are determined with a unique assignment of the J momentum. Except for the level energies of 71 even-parity states are confirmed by the present work, all information mention above has not been reported previously.
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Keywords:
- Spectrum of Sm atom /
- even-parity highly excited state /
- two-step resonant excitation /
- photoionization detection
[1] Boker J, Freeman R R, CookeWE 1982 Phys. Rev. Lett. 48 1242
[2] Li J M 1983 Acta Phys. Sin. 32 84(in Chinese)[李家明 1983 32 84]
[3] Xiao Y, Dai C J, Qin W J 2010 Chin. Phys. B 19 063202
[4] DouWD, Dai C J, Li S B 2004 J. Quantat. Spectro. Radia. Trans. 85 145
[5] Li S B, Dai C J 2003 J. Quantat. Spectro. Radia. Trans. 77 345
[6] Li M, Dai C J, Xie J 2010 Acta Phys. Sin. 59 3154(in Chinese)[李 鸣,戴长建, 谢军 2010 59 3154]
[7] Jayasekharan T, Razvi M A N, Bhale G L 2000 J. Phys. B: At. Mol. Opt. Phys. 33 3123
[8] Li C Q, Dai C J, Lu J 2000 Chin. Phys. B 9 500
[9] Yaseen M, Ali R, Nadeem A, Bhatti S A, Baig M A 2002 Eur. Phys. J. D 20 177
[10] LindsayMD, Dai C J, Lyons B J, Mahon C R, Gallagher T F 1994 Phys. Rev. A 50 5058
[11] Lindsay M D, Cai L T, Schinn G W, Dai C J, Gallagher T F 1992 Phys. Rev. A 45 231
[12] Li S B, Dai C J, Sun W, Xue P 2002 J. Elec. Spectro. Rela. Phen. 127 183
[13] Jones R R, Dai C J, Gallagher T F 1990 Phys. Rev. A 41 316
[14] Ali R, Yaseen M, Nadeem A, Bhatti S A, Baig M A 1999 J. Phys. B 32 953
[15] Yi J, Park H, Lee J 2001 J. Kore. Phys. Soci. 39 916
[16] Zhao H Y, Dai C J, Guan F 2009 Acta Phys. Sin. 58 215(in Chinese)[赵洪英, 戴长建, 关锋 2009 58 215]
[17] Hu S F, Zhang S, Mei S M, Qiu J Z, Chen X 1990 J. Quantat. Spectro. Radia. Trans. 43 75
[18] QinWJ, Dai C J, Xiao Y, Zhao H Y 2009 Chin. Phys. B 18 3384
[19] Jia L J, Jing C Y, Zhou Z Y, Lin F C 1993 J. Opt. Soc. Am. B 10 1317
[20] Zhao H Y, Dai C J, Guan F 2009 J. Phys. B 42 065001
[21] Jayasekharan T, Razvi M A N, Bhale G L 2000 J. Opt. Soc. Am. B 17 1607
[22] Jayasekharan T, Razvi M A N, Bhale G L 1996 J. Opt. Soc. Am. B 13 641
[23] Gomonai A I, Plekan O I 2003 J. Phys. B: At. Mol. Opt. Phys. 36 4155
[24] Pulhani A K, Shah M L, Vas Dev, Suri B M 2004 J. Opt. Soc. Am. B 21 1117
[25] Martin W C, Zalubas R, Hagan L 1978 Atomic Energy Levels— The Rare-Earth Elements(Washington: National Burean of Standards)p162
[26] Guan F, Dai C J, Zhao H Y 2008 Chin. Phys. B 17 3655
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[1] Boker J, Freeman R R, CookeWE 1982 Phys. Rev. Lett. 48 1242
[2] Li J M 1983 Acta Phys. Sin. 32 84(in Chinese)[李家明 1983 32 84]
[3] Xiao Y, Dai C J, Qin W J 2010 Chin. Phys. B 19 063202
[4] DouWD, Dai C J, Li S B 2004 J. Quantat. Spectro. Radia. Trans. 85 145
[5] Li S B, Dai C J 2003 J. Quantat. Spectro. Radia. Trans. 77 345
[6] Li M, Dai C J, Xie J 2010 Acta Phys. Sin. 59 3154(in Chinese)[李 鸣,戴长建, 谢军 2010 59 3154]
[7] Jayasekharan T, Razvi M A N, Bhale G L 2000 J. Phys. B: At. Mol. Opt. Phys. 33 3123
[8] Li C Q, Dai C J, Lu J 2000 Chin. Phys. B 9 500
[9] Yaseen M, Ali R, Nadeem A, Bhatti S A, Baig M A 2002 Eur. Phys. J. D 20 177
[10] LindsayMD, Dai C J, Lyons B J, Mahon C R, Gallagher T F 1994 Phys. Rev. A 50 5058
[11] Lindsay M D, Cai L T, Schinn G W, Dai C J, Gallagher T F 1992 Phys. Rev. A 45 231
[12] Li S B, Dai C J, Sun W, Xue P 2002 J. Elec. Spectro. Rela. Phen. 127 183
[13] Jones R R, Dai C J, Gallagher T F 1990 Phys. Rev. A 41 316
[14] Ali R, Yaseen M, Nadeem A, Bhatti S A, Baig M A 1999 J. Phys. B 32 953
[15] Yi J, Park H, Lee J 2001 J. Kore. Phys. Soci. 39 916
[16] Zhao H Y, Dai C J, Guan F 2009 Acta Phys. Sin. 58 215(in Chinese)[赵洪英, 戴长建, 关锋 2009 58 215]
[17] Hu S F, Zhang S, Mei S M, Qiu J Z, Chen X 1990 J. Quantat. Spectro. Radia. Trans. 43 75
[18] QinWJ, Dai C J, Xiao Y, Zhao H Y 2009 Chin. Phys. B 18 3384
[19] Jia L J, Jing C Y, Zhou Z Y, Lin F C 1993 J. Opt. Soc. Am. B 10 1317
[20] Zhao H Y, Dai C J, Guan F 2009 J. Phys. B 42 065001
[21] Jayasekharan T, Razvi M A N, Bhale G L 2000 J. Opt. Soc. Am. B 17 1607
[22] Jayasekharan T, Razvi M A N, Bhale G L 1996 J. Opt. Soc. Am. B 13 641
[23] Gomonai A I, Plekan O I 2003 J. Phys. B: At. Mol. Opt. Phys. 36 4155
[24] Pulhani A K, Shah M L, Vas Dev, Suri B M 2004 J. Opt. Soc. Am. B 21 1117
[25] Martin W C, Zalubas R, Hagan L 1978 Atomic Energy Levels— The Rare-Earth Elements(Washington: National Burean of Standards)p162
[26] Guan F, Dai C J, Zhao H Y 2008 Chin. Phys. B 17 3655
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