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Zeitschrift für Naturforschung A

A Journal of Physical Sciences

Editor-in-Chief: Holthaus, Martin

Editorial Board: Fetecau, Corina / Kiefer, Claus

12 Issues per year

IMPACT FACTOR 2016: 1.432

CiteScore 2017: 1.30

SCImago Journal Rank (SJR) 2017: 0.403
Source Normalized Impact per Paper (SNIP) 2017: 0.632

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Volume 26, Issue 9


Zeeman-Effekt in der Phosphoreszenz von Naphthalin-Mischkristallen

D. Kilpper / M. Schowerer
Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/zna-1971-0909


The Zeeman splitting of the phosphorescence (T1→ S0) was investigated in a mixed crystal of perdeuterated Naphthalene (N-d8) and Naphthalene (N-h8). The N-h8 concentration varied between 0.2 and 5%, the temperature was 4.2 °K and the magnetic field strength was 50 kG. The intensity of the Zeeman components is strongly dependent on the direction of the field with respect to the molecular axes. In addition to this anisotropy we observe a strong anisotropy of the lifetime of the triplet state. Both these anisotropics are due to the zero field splitting of the triplet state T1. Their analysis yields the following constants: (1) the relative radiative transition probabilities kxr, kyr and kzr from the three zero field components Tx, Ty and Tz to the singlet ground state S0 and (2) the total lifetimes tx , ty and tz of each zero field component. No assumptions concerning selection rules are made in the analysis. The results for the values of the kur (u-x, y, z) depend on the vibronic state of S0: if totally symmetric states are excited, 97% of the phosphorescence originates from the zero field component Tx . If the Δṽ= 1629 cm-1 B3g-vibration is excited the phosphorescence originates mainly from Ty and Tz . The total lifetimes of Tx , Ty and Tz are the same as measured previously in low fields by ESR.

About the article

Received: 1971-06-24

Published Online: 2014-06-02

Published in Print: 1971-09-01

Citation Information: Zeitschrift für Naturforschung A, Volume 26, Issue 9, Pages 1425–1434, ISSN (Online) 1865-7109, ISSN (Print) 0932-0784, DOI: https://doi.org/10.1515/zna-1971-0909.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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