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

Maria Grazia Santangelo, René Tschaggelar, Besnik Kasumaj, Jeffrey Harmer, Jörg Forrer, Maria Grazia Santangelo, Patrik Leger, Gunnar Jeschke, Inés García-Rubio, François Diederich, Rolf Schuhmann, Henry Dube

Risultato della ricerca: Article

29 Citazioni (Scopus)

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) B-2-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 B-2-field strength per square-root of the transmitted rf power over the frequency range 2-180 MHz. The distributions of the microwave B-1- and E-1-field, and the rf B-2-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.
Lingua originaleEnglish
pagine (da-a)81-87
Numero di pagine8
RivistaJournal of Magnetic Resonance
Volume200
Stato di pubblicazionePublished - 2009

Fingerprint

cryogenics
radio frequencies
pulses
electrons
resonators
tubes
saddles
power efficiency
field strength
metal ions
electromagnetic fields
coils
frequency ranges
transition metals
microwaves
cavities

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Condensed Matter Physics
  • Nuclear and High Energy Physics
  • Biochemistry

Cita questo

Santangelo, M. G., Tschaggelar, R., Kasumaj, B., Harmer, J., Forrer, J., Santangelo, M. G., ... Dube, H. (2009). Cryogenic 35 GHz pulse ENDOR probehead accommodating large sample sizes: Performance and applications. Journal of Magnetic Resonance, 200, 81-87.

Cryogenic 35 GHz pulse ENDOR probehead accommodating large sample sizes: Performance and applications. / Santangelo, Maria Grazia; Tschaggelar, René; Kasumaj, Besnik; Harmer, Jeffrey; Forrer, Jörg; Santangelo, Maria Grazia; Leger, Patrik; Jeschke, Gunnar; García-Rubio, Inés; Diederich, François; Schuhmann, Rolf; Dube, Henry.

In: Journal of Magnetic Resonance, Vol. 200, 2009, pag. 81-87.

Risultato della ricerca: Article

Santangelo, MG, Tschaggelar, R, Kasumaj, B, Harmer, J, Forrer, J, Santangelo, MG, Leger, P, Jeschke, G, García-Rubio, I, Diederich, F, Schuhmann, R & Dube, H 2009, 'Cryogenic 35 GHz pulse ENDOR probehead accommodating large sample sizes: Performance and applications', Journal of Magnetic Resonance, vol. 200, pagg. 81-87.
Santangelo, Maria Grazia ; Tschaggelar, René ; Kasumaj, Besnik ; Harmer, Jeffrey ; Forrer, Jörg ; Santangelo, Maria Grazia ; Leger, Patrik ; Jeschke, Gunnar ; García-Rubio, Inés ; Diederich, François ; Schuhmann, Rolf ; Dube, Henry. / Cryogenic 35 GHz pulse ENDOR probehead accommodating large sample sizes: Performance and applications. In: Journal of Magnetic Resonance. 2009 ; Vol. 200. pagg. 81-87.
@article{3be6189f682e4df58a9769ddadf7eeaf,
title = "Cryogenic 35 GHz pulse ENDOR probehead accommodating large sample sizes: Performance and applications",
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) B-2-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 B-2-field strength per square-root of the transmitted rf power over the frequency range 2-180 MHz. The distributions of the microwave B-1- and E-1-field, and the rf B-2-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.",
keywords = "ENDOR; Pulse EPR; ENDOR resonator; Q-band probehead; Large sample resonator",
author = "Santangelo, {Maria Grazia} and Ren{\'e} Tschaggelar and Besnik Kasumaj and Jeffrey Harmer and J{\"o}rg Forrer and Santangelo, {Maria Grazia} and Patrik Leger and Gunnar Jeschke and In{\'e}s Garc{\'i}a-Rubio and Fran{\cc}ois Diederich and Rolf Schuhmann and Henry Dube",
year = "2009",
language = "English",
volume = "200",
pages = "81--87",
journal = "Journal of Magnetic Resonance",
issn = "1090-7807",
publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Cryogenic 35 GHz pulse ENDOR probehead accommodating large sample sizes: Performance and applications

AU - Santangelo, Maria Grazia

AU - Tschaggelar, René

AU - Kasumaj, Besnik

AU - Harmer, Jeffrey

AU - Forrer, Jörg

AU - Santangelo, Maria Grazia

AU - Leger, Patrik

AU - Jeschke, Gunnar

AU - García-Rubio, Inés

AU - Diederich, François

AU - Schuhmann, Rolf

AU - Dube, Henry

PY - 2009

Y1 - 2009

N2 - 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) B-2-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 B-2-field strength per square-root of the transmitted rf power over the frequency range 2-180 MHz. The distributions of the microwave B-1- and E-1-field, and the rf B-2-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.

AB - 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) B-2-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 B-2-field strength per square-root of the transmitted rf power over the frequency range 2-180 MHz. The distributions of the microwave B-1- and E-1-field, and the rf B-2-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.

KW - ENDOR; Pulse EPR; ENDOR resonator; Q-band probehead; Large sample resonator

UR - http://hdl.handle.net/10447/52841

M3 - Article

VL - 200

SP - 81

EP - 87

JO - Journal of Magnetic Resonance

JF - Journal of Magnetic Resonance

SN - 1090-7807

ER -