Transition probabilities in Nd(II) and the solar neodymium abundance

Robert S. Maier; Ward Whaling

doi:10.1016/0022-4073(77)90048-6

Transition probabilities in Nd(II) and the solar neodymium abundance

Robert S. Maier, Ward Whaling

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Abstract

We have measured branching ratios for all the known transitions from nine levels in Nd⁺. We use the known mean lifetimes of four of these levels to compute transition probabilities for 60 transitions. We have measured the solar equivalent widths of 12 of these lines on the Preliminary Edition of the Kitt Peak Solar Atlas and compute a photospheric Nd abundance log( N_Nd N_H)+12 = 1.26±0.14, using the solar model parameters of Righini and Rigutti based on the Mutschlecner model. The solar lines used in this computation are weak ( W λ<3×10^-6), and the derived abundance has little dependence on the uncertainties of the solar model.

Original language	English (US)
Pages (from-to)	501-507
Number of pages	7
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	18
Issue number	5
DOIs	https://doi.org/10.1016/0022-4073(77)90048-6
State	Published - Nov 1977
Externally published	Yes

ASJC Scopus subject areas

Radiation
Atomic and Molecular Physics, and Optics
Spectroscopy

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10.1016/0022-4073(77)90048-6

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title = "Transition probabilities in Nd(II) and the solar neodymium abundance",

abstract = "We have measured branching ratios for all the known transitions from nine levels in Nd+. We use the known mean lifetimes of four of these levels to compute transition probabilities for 60 transitions. We have measured the solar equivalent widths of 12 of these lines on the Preliminary Edition of the Kitt Peak Solar Atlas and compute a photospheric Nd abundance log( NNd NH)+12 = 1.26±0.14, using the solar model parameters of Righini and Rigutti based on the Mutschlecner model. The solar lines used in this computation are weak ( W λ<3×10-6), and the derived abundance has little dependence on the uncertainties of the solar model.",

author = "Maier, {Robert S.} and Ward Whaling",

year = "1977",

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T1 - Transition probabilities in Nd(II) and the solar neodymium abundance

AU - Maier, Robert S.

AU - Whaling, Ward

PY - 1977/11

Y1 - 1977/11

N2 - We have measured branching ratios for all the known transitions from nine levels in Nd+. We use the known mean lifetimes of four of these levels to compute transition probabilities for 60 transitions. We have measured the solar equivalent widths of 12 of these lines on the Preliminary Edition of the Kitt Peak Solar Atlas and compute a photospheric Nd abundance log( NNd NH)+12 = 1.26±0.14, using the solar model parameters of Righini and Rigutti based on the Mutschlecner model. The solar lines used in this computation are weak ( W λ<3×10-6), and the derived abundance has little dependence on the uncertainties of the solar model.

AB - We have measured branching ratios for all the known transitions from nine levels in Nd+. We use the known mean lifetimes of four of these levels to compute transition probabilities for 60 transitions. We have measured the solar equivalent widths of 12 of these lines on the Preliminary Edition of the Kitt Peak Solar Atlas and compute a photospheric Nd abundance log( NNd NH)+12 = 1.26±0.14, using the solar model parameters of Righini and Rigutti based on the Mutschlecner model. The solar lines used in this computation are weak ( W λ<3×10-6), and the derived abundance has little dependence on the uncertainties of the solar model.

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JO - Journal of Quantitative Spectroscopy and Radiative Transfer

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Transition probabilities in Nd(II) and the solar neodymium abundance

Abstract

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