Symmetry Selection Rules of Electric-Dipole Transitions ofEu3+andSm2+in Crystals: A Solid-State Infrared Quantum Counter-Amplifier

1968 ◽  
Vol 170 (2) ◽  
pp. 412-417 ◽  
Author(s):  
Francis K. Fong ◽  
Lawrence A. Vredevoe ◽  
Roger E. De Wames
Keyword(s):  
Solid State ◽  
Electric Dipole ◽  
Selection Rules

scholarly journals Solid-state structure and electronic states of hydrogen-bonded dimer of pyridyl-substituted tetrathiafulvalene salted with PF6−

RSC Advances ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 6236-6241 ◽  
Author(s):  
Tomoaki Kanetou ◽  
Ryo Tsunashima ◽  
Norihisa Hoshino ◽  
Tomoyuki Akutagawa
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Dipole Moment ◽  
Solid State ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Electronic States ◽  
Electronic Systems ◽  
State Structure ◽  
Solid State Structure

Our results clarified uniqueness in hydrogen bonding TTFPy dimer in which proton in hydrogen bond was thermally fluctuated. In addition, the fluctuation was coupled with π-electronic systems of TTF moiety where electric dipole moment was amplified.

Selection Rules in Nuclear Radiation

1936 ◽  
Vol 32 (2) ◽  
pp. 291-300 ◽  
Author(s):  
H. M. Taylor
Keyword(s):  
Magnetic Dipole ◽  
Electric Dipole ◽  
High Probability ◽  
Internal Conversion ◽  
The Other ◽  
Nuclear Radiation ◽  
Central Field ◽  
Selection Rules ◽  
Dipole Radiation ◽  
Γ Rays

AbstractIn the first part of this paper we discuss the radiation from a single charged particle moving in an arbitrary central field of force and obeying Dirac's equation. We consider the electric quadripole and magnetic dipole radiation as well as the electric dipole. We derive the selection rules for the magnetic dipole radiation and collect together for reference the corresponding selection rules for the electric dipole and quadripole radiations. In the second part we discuss the relative intensities of the various types of radiation, treating in detail the cases where the selection rules for magnetic dipole and electric quadripole are simultaneously satisfied. Finally we show that these results have an important bearing on the theory of internal conversion of γ-rays. The internal conversion of soft γ-rays occurs with such high probability that the theory is unable to account for the experimental results unless it is assumed that the radiation is largely magnetic dipole in character. On the other hand, Fisk and Taylor (loc. cit.) were unable to account for the presence of magnetic dipole radiation in appreciable amounts. We show that this is due to the fact that, of the two possible transitions (a and e of § 2) in which both magnetic dipole and electric quadripole radiation can be emitted, Fisk and Taylor considered only the second. In the case of the second, corresponding to a transition between two distinct terms, we show that Fisk and Taylor were correct in predicting a negligible amount of magnetic dipole radiation, but in the case of the first, corresponding to a transition between two levels of one multiplet term, we find that there is indeed a high percentage of magnetic dipole radiation.

Two-photon electric-dipole selection rules

1984 ◽  
Vol 1 (1) ◽  
pp. 52 ◽  
Author(s):  
Keith D. Bonin ◽  
Thomas J. McIlrath
Keyword(s):  
Electric Dipole ◽  
Selection Rules ◽  
Two Photon
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