Cryogenic 35 GHz pulse ENDOR probehead accommodating large sample sizes: performance and applications

Tschaggelar, Rene, Kasumaj, Besnik, Santangelo, Maria Grazia, Forrer, Joerg, Leger, Patrik, Dube, Henry, Diederich, Francois, Harmer, Jeffrey, Schuhmann, Rolf, Garcia-Rubio, Ines and Jeschke, Gunnar (2009) Cryogenic 35 GHz pulse ENDOR probehead accommodating large sample sizes: performance and applications. Journal of Magnetic Resonance, 200 1: 81-87. doi:10.1016/j.jmr.2009.06.007


Author Tschaggelar, Rene
Kasumaj, Besnik
Santangelo, Maria Grazia
Forrer, Joerg
Leger, Patrik
Dube, Henry
Diederich, Francois
Harmer, Jeffrey
Schuhmann, Rolf
Garcia-Rubio, Ines
Jeschke, Gunnar
Title Cryogenic 35 GHz pulse ENDOR probehead accommodating large sample sizes: performance and applications
Journal name Journal of Magnetic Resonance   Check publisher's open access policy
ISSN 1090-7807
1096-0856
Publication date 2009-09-01
Sub-type Article (original research)
DOI 10.1016/j.jmr.2009.06.007
Volume 200
Issue 1
Start page 81
End page 87
Total pages 7
Place of publication Maryland Heights, MO, United States
Publisher Academic Press
Language eng
Formatted abstract
The construction and performance of a cryogenic 35 GHz pulse electron nuclear double resonance (ENDOR) probehead for large samples is presented. The resonator is based on a rectangular TE102 cavity in which the radio frequency (rf) B2-field is generated by a two turn saddle ENDOR coil crossing the resonator along the sample axis with minimal distance to the sample tube. An rf power efficiency factor is used to define the B2-field strength per square-root of the transmitted rf power over the frequency range 2–180 MHz. The distributions of the microwave B1- and E1-field, and the rf B2-field are investigated by electromagnetic field calculations. All dielectrics, the sample tube, and coupling elements are included in the calculations. The application range of the probehead and the advantages of using large sample sizes are demonstrated and discussed on a number of paramagnetic samples containing transition metal ions.
Keyword Endor
Pulse EPR
ENDOR resonator
Q-band probehead
Large sample resonator
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Advanced Imaging Publications
 
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