Zobrazeno 1 - 10
of 18
pro vyhledávání: '"E E, Ylinen"'
Publikováno v:
Solid state nuclear magnetic resonance. 71
Deuteron NMR spectra and spin-lattice relaxation were studied experimentally in zeolite NaY(2.4) samples containing 100% or 200% of CD3OH or CD3OD molecules of the total coverage of Na atoms in the temperature range 20-150K. The activation energies d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::842ac8b4d0fc4cd3d44b7baa525c3aaf
https://pubmed.ncbi.nlm.nih.gov/26482130
https://pubmed.ncbi.nlm.nih.gov/26482130
Publikováno v:
Molecular Physics. 100:2877-2893
Spin-lattice relaxation processes in 13CH3 groups in methyl compounds are studied both theoretically and experimentally. The four spin-½ nuclei in such methyl groups give rise to 16 spin-rotational states, which are split by rotational tunnelling. F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd17142f18ecf875f87ba38fc1c900a8
https://doi.org/10.1080/00268970210123955
https://doi.org/10.1080/00268970210123955
A new method is introduced for analyzing deuteron spin–lattice relaxation in molecular systems with a broad distribution of activation energies and correlation times. In such samples the magnetization recovery is strongly non-exponential but can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f6b378a36ef5fb8ef1ce5631fa6aa98
http://ruj.uj.edu.pl/xmlui/handle/item/17000
http://ruj.uj.edu.pl/xmlui/handle/item/17000
Publikováno v:
Solid state nuclear magnetic resonance. 35(3)
Deuteron NMR spectra and relaxation were studied at the resonance frequency of 46MHz in polycrystalline fully and partly deuterated (NH(4))(2)ZnCl(4) between 300 and 5K. Spectral components confirm existence of ammonium positions with different poten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::25ace732f4a8f163964869e6609d95a4
https://pubmed.ncbi.nlm.nih.gov/19272759
https://pubmed.ncbi.nlm.nih.gov/19272759
Publikováno v:
Solid state nuclear magnetic resonance. 34(1-2)
Deuteron spin-lattice relaxation and spectra were studied in partially and fully deuterated (NH(4))(2)PdCl(6) in the temperature range 5-300K. The relaxation rate maximum was observed at 45K in (ND(4))(2)PdCl(6). Its value is reduced due to limited j
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::2de79214516980f1c5517577c089ccf4
https://pubmed.ncbi.nlm.nih.gov/18585902
https://pubmed.ncbi.nlm.nih.gov/18585902
Publikováno v:
Journal of magnetic resonance (San Diego, Calif. : 1997). 130(2)
We have derived a closed-form expression for the solid echo signal of quadrupolar I = 1 nuclei after the pulse sequence (theta1)x-tau-(theta2)y-t for arbitrary values of the RF nutation frequency omega1 = gammaB1 and the quadrupolar frequency omegaQ.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::88f9919d8ceaaba113ff5fdbbff3d5ec
https://pubmed.ncbi.nlm.nih.gov/9500893
https://pubmed.ncbi.nlm.nih.gov/9500893
Publikováno v:
Zeitschrift für Naturforschung A. 57:661-662
The temperature dependences of the 127I nuclear quadrupole coupling in NH4IO4 and in ND4IO4 are reported. In each salt, the quadrupole coupling decreases to a very small value at low temperatures, and in the case of ND4IO4 passes through zero and cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de41f329919cc92fce67b12d1ff4dff9
https://doi.org/10.1515/zna-2002-0804
https://doi.org/10.1515/zna-2002-0804
Publikováno v:
The journal of chemical physics 128, 184510 (2008). doi:10.1063/1.2919568
Deuteron NMR relaxation and spectra were studied at the resonance frequency of 46 MHz in polycrystalline (ND(4))(2)PtCl(6) between 300-5 K. The relaxation rate maximum near 50 K is about 53% smaller than the calculated maximum related to 120 degrees
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebb78f28abae20b68059956e426086e8
https://doi.org/10.1063/1.2919568
https://doi.org/10.1063/1.2919568
Publikováno v:
Journal of Physics C: Solid State Physics. 20:L749-L753
Quantum mechanical calculations show that if the system of three spin-1/2 nuclei, forming an equilateral triangle, is not describable by a spin temperature, the shape of its free-precession signal depends strongly on the angle of rotation of the RF p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fd65725a5f4e288eb4275de77443eec
https://doi.org/10.1088/0022-3719/20/28/008
https://doi.org/10.1088/0022-3719/20/28/008
Publikováno v:
Journal of Physics C: Solid State Physics. 10:4149-4154
The Zeeman relaxation of protons in two NH4ClO4 samples with natural (0.015%) and 0.1% deuteron concentrations was studied at the proton resonance frequencies 18 MHz and 22 MHz in the temperature range from 4.2 to 30K. The effect of deuterons on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06899d832b6d8cca15934adc4da3d613
https://doi.org/10.1088/0022-3719/10/20/024
https://doi.org/10.1088/0022-3719/10/20/024