Extrapolated difference technique for the determination of atomization energies of Sm, Eu, and Yb bromides

Sergeev, Dmitry N.; Butman, Mikhail F.; Motalov, Vladimir B.; Kudin, Lev S.; Krämer, Karl (2013). Extrapolated difference technique for the determination of atomization energies of Sm, Eu, and Yb bromides. International journal of mass spectrometry, 348, pp. 23-28. Elsevier 10.1016/j.ijms.2013.03.004

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An approach for the determination of atomization energies based on the extrapolated difference technique in the framework of Knudsen effusion mass spectrometry is proposed. Its essence is the use of thermodynamic data for the determination of the appearance energy of fragment ions of a reference and a special mathematical treatment of the ionization efficiency functions. The advantages of this approach are demonstrated for the cases of incongruently vaporizing lanthanide bromides that suffer from decomposition or disproportionation at high temperatures. The atomization energies for SmBr2 (7.78±0.12 eV), EuBr2 (7.51±0.11 eV), YbBr2 (7.25±0.13 eV), SmBr3 (11.09±0.10 eV), and YbBr3 (10.23±0.09 eV) molecules have been determined for the first time.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)

UniBE Contributor:

Krämer, Karl

Subjects:

500 Science > 540 Chemistry

ISSN:

1387-3806

Publisher:

Elsevier

Language:

English

Submitter:

Karl Krämer

Date Deposited:

16 Dec 2013 16:29

Last Modified:

23 Apr 2020 15:11

Publisher DOI:

10.1016/j.ijms.2013.03.004

Web of Science ID:

000321410100004

Uncontrolled Keywords:

Lanthanide bromides; Ionization efficiency curve; Appearance energy; Atomization energy

BORIS DOI:

10.7892/boris.39101

URI:

https://boris.unibe.ch/id/eprint/39101

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