Transition assignments to Lβ2 satellites in X-ray emission spectra of higher Z elements

Poonia, Surendra; Soni, S. N.

doi:10.1016/s0022-3697(00)00198-0

Cited by 7 publications

(9 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The transition energies have been calculated using Hartree-Fock-Slater (HFS) model [10] in the intermediate coupling scheme and their relative intensities have been estimated in the L-S coupling scheme. In continuation of the same work, we present here the transition assignments to the satellites named α 3 , α 4 and α 5 in the L-emission spectra of 4d transition elements.…”

Section: Introductionmentioning

confidence: 77%

“…10] for relative probabilities of the transitions of each multiplet. The detailed method of this distribution have been used by Poonia and Soni in our earlier reports [1][2][3][4][5][6][7].…”

Section: The Transition Probabilitiesmentioning

confidence: 99%

“…For several past years, the identification of the transitions in doubly and triply inner shell ionized atoms, which can be assigned to various X-ray satellites [1][2][3][4][5][6][7], has been in progress in this laboratory. The method adopted is more reliable than Wentzel's Z+1 approximation [8,9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

2p3/2 −13x−1−3x−13d−1 X-ray satellites spectra in the Lα1 region of 4d transition elements

Poonia

Soni

2009

Indian J Phys

View full text Add to dashboard Cite

The X-ray satellite spectra arising due to 2p 3/2 -1 3x -1 -3x -1 3d -1 (x ≡ s, p, d) transition array, in elements with Z = 40 to 48, have been calculated, using available Hartree-Fock-Slater (HFS) data on 1s -1 -2p -1 3x -and 2p 3/2 -1 -3x -1 ,3x -1 Auger transition energies. The relative intensities of all the possible transitions have been estimated by considering cross -sections for the Auger transitions simultaneous to a hole creation and then distributing statistically the total cross sections for initial two hole states 2p 3/2 -1 -3x -1 amongst various allowed transitions from these initial states to 3x -1 3d -1 final states by Coster-Kronig (CK) and shake off processes. In both these processes initial single hole creation is the prime phenomenon. Each transition has been assumed to give rise to a Gaussian line and the overall spectrum has been computed as the sum of these Gaussian curves. The calculated spectra have been compared with the measured satellite energies in Lα 1 spectra. Their intense peaks have been identified as the observed satellite lines. The peaks in the theoretical satellite spectra were identified as the experimentally reported satellites α 3 , α 4 and α 5 , which lie on the highenergy side of the Lα 1 dipole line.

show abstract

Section: Introductionmentioning

confidence: 77%

Section: The Transition Probabilitiesmentioning

confidence: 99%

See 1 more Smart Citation

2p3/2 −13x−1−3x−13d−1 X-ray satellites spectra in the Lα1 region of 4d transition elements

Poonia

Soni

2009

Indian J Phys

View full text Add to dashboard Cite

show abstract

“…It should be noted that the Coster -Kronig transitions help in forming only the L 3 -M 4,5 states, and that too only in the elements up to Z = 47 [19] and Z = 74-90 [18]. The detailed method of this distribution has been used by Poonia and Soni in our earlier reports [1][2][3][4][5][6][7]. This probability has been calculated by interpolation from the percentage probabilities of shake-off processes occurring with a single photoionization in inert gases [19].…”

Section: The Transition Probabilitiesmentioning

confidence: 99%

“…For several past years, the identification of the transitions in double and triple inner shell ionized atoms, which can be assigned to various X-ray satellites [1][2][3][4][5][6][7], has been in progress in this laboratory. The method adopted is more reliable than Wentzel's Z+1 approximation [8,9].…”

Section: Introductionmentioning

confidence: 99%

Lβ1 and Lβ2 Satellites in the X-ray Emission Spectra

Poonia¹

2005

AIP Conference Proceedings

View full text Add to dashboard Cite

The X-ray satellites Lβ 1 I , Lβ 1 II , Lβ 1 III , Lβ 1 IV , Lβ 2 I, Lβ 2 (b) , Lβ 2 II and Lβ 2 (c) observed in the L-emission spectra in elements with Z = 26 to 92, have been calculated. The energies of various transitions have been calculated by available Hartree-Fock-Slater (HFS) data using the semi-empirical Auger transition energies in the doubly ionized atoms and their relative intensities have been estimated by considering cross -sections of singly ionized 2x -1 (x ≡ s, p) states and then of subsequent Coster-Kronig and shake off processes. The calculated spectra have been compared with the measured satellite energies in the L emission spectra. Their intense peaks have been identified as the observed satellite lines. The one to one correspondence between the peaks in calculated spectra and the satellites in measured spectra has been established on the basis of the agreement between the separations in the peak energies and those in the measured satellite energies. Group of transitions under the transition schemes L 2 M x -M x M 4,5 and L 3 M x -M x N 4,5 (x ≡ 1-5), which give rise to these satellites have been identified. It is observed that the satellite Lβ 2 (b) in all these spectra can be assigned to the superposition of 3 F 4 -3 G 5 and 3 F 4 -3 D 3 transitions and that this must be most intense one out of all these satellites, contributing in order of decreasing intensity. Each of the remaining satellites is found to have different origin in different elements. The possible contributions of the suitable transitions to all these lines have also been discussed.

show abstract

Lβ₂ satellites in the X‐ray emission spectra of elements ₇₂Hf, ₇₃Ta, ₇₄W, ₈₁Tl, ₈₃Bi and ₉₂U

Poonia

2011

X-Ray Spectrometry

View full text Add to dashboard Cite

The satellite spectra arising due to the L 3 M x -M x N 4,5 (x = 1-5) transition array in the X-ray emission spectra of 72 Hf, 73 Ta, 74 W, 81 Tl, 83 Bi and 92 U have been calculated using available HFS data on K-LM and L-MN Auger transition energies. The agreement between the calculated and measured energies, that between calculated and measured separations in energies and the consideration of the relative probabilities of all the L 3 M x -M x N 4,5 transitions have been used as the basis for deciding the origin of the satellites. It has been established that two satellites observed in the Lb 2 region of the X-ray spectra of various elements, named b 2 I and b 2 II in the order of increasing energy, are mainly emitted by the L 3 M 4,5 -M 4,5 N 4,5 transitions. It is observed that satellite b 2 I in the spectra of elements with 72 Hf to 74 W has been assigned to the superposition of the 3 F 4 -3 G 5 and 3 F 4 -3 D 3 transitions and must be the most intense one among all these satellites. The same transition has been proved to be the main origin of satellite b 2 II , reported in the element with 81 Tl, 83 Bi and 92 U. Further, satellite b 2 I , reported in the spectra of elements with 81 Tl and 92 U, has been associated with the transitions 3 D 3 -3 F 4 and 1 D 2 -1 F 3 . Finally, line b 2 II , reported in the spectra of elements with Z = 72-74, has been assigned to the 1 F 3 -1 G 4 and 3 P 0 -3 D 1 transitions. The possible contributions of other transitions of the L 3 M x -M x N 4,5 (x = 1-5) array having intensities comparable with those of the above transitions, as well as the corresponding lines that have not yet been observed, have also been discussed.

show abstract

Transition assignments to Lβ2 satellites in X-ray emission spectra of higher Z elements

Cited by 7 publications

References 10 publications

2p3/2 −13x−1−3x−13d−1 X-ray satellites spectra in the Lα1 region of 4d transition elements

2p3/2 −13x−1−3x−13d−1 X-ray satellites spectra in the Lα1 region of 4d transition elements

Lβ1 and Lβ2 Satellites in the X-ray Emission Spectra

Lβ₂ satellites in the X‐ray emission spectra of elements ₇₂Hf, ₇₃Ta, ₇₄W, ₈₁Tl, ₈₃Bi and ₉₂U

Contact Info

Product

Resources

About

Transition assignments to Lβ2 satellites in X-ray emission spectra of higher Z elements

Cited by 7 publications

References 10 publications

2p3/2 −13x−1−3x−13d−1 X-ray satellites spectra in the Lα1 region of 4d transition elements

2p3/2 −13x−1−3x−13d−1 X-ray satellites spectra in the Lα1 region of 4d transition elements

Lβ1 and Lβ2 Satellites in the X-ray Emission Spectra

Lβ2 satellites in the X‐ray emission spectra of elements 72Hf, 73Ta, 74W, 81Tl, 83Bi and 92U

Contact Info

Product

Resources

About

Lβ₂ satellites in the X‐ray emission spectra of elements ₇₂Hf, ₇₃Ta, ₇₄W, ₈₁Tl, ₈₃Bi and ₉₂U