Impact of γ-Irradiation on Separation of Nuclear Spin-Relaxation Mechanisms Under Magnetic Saturation in a NaF Crystal

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Impact of γ-Irradiation on Separation of Nuclear Spin-Relaxation Mechanisms Under Magnetic Saturation in a NaF Crystal. / Рочев, Андрей Михайлович ; Микушев, Владимир Михайлович ; Чарная, Елена Владимировна.

In: Applied Magnetic Resonance, Vol. 55, No. 8, 05.07.2024, p. 819-826.

Research output: Contribution to journal › Conference article › peer-review

BibTeX

@article{741d6d673d7940bea10d0514ac55e73f,

title = "Impact of γ-Irradiation on Separation of Nuclear Spin-Relaxation Mechanisms Under Magnetic Saturation in a NaF Crystal",

abstract = "Studies were carried out on the effect of additional continuous magnetic saturation of the NMR line on nuclear spin relaxation in a NaF single crystal before and after γ-irradiation. The times of magnetization recovery after inversion were measured at room temperature using a Bruker Avance 400 pulse spectrometer. The magnetic saturation was obtained by exciting a long additional resonance pulse. Two main contributions to relaxation for quadrupole 23Na nuclei, due to spin-phonon coupling in a regular crystalline lattice and due to magnetic centers, were separated by suppressing the latter contribution. γ-irradiation was shown to enhance spin relaxation, however, the magnetic saturation does not suppress the contribution of color centers. The times corresponding to 23Na relaxation due to spin-phonon coupling in a regular lattice, due to magnetic centers and color centers were evaluated. It was shown that the rate of spin–lattice relaxation for dipole 19F nuclei was not affected by magnetic saturation.",

keywords = "nuclear spin-phonon coupling, paramagnetic centers in crystals, spin-lattice relaxation, magnetic saturation of the NMR line",

author = "Рочев, {Андрей Михайлович} and Микушев, {Владимир Михайлович} and Чарная, {Елена Владимировна}",

note = "Rochev, A. M. Impact of γ-Irradiation on Separation of Nuclear Spin-Relaxation Mechanisms Under Magnetic Saturation in a NaF Crystal / A. M. Rochev, V. M. Mikushev, E. V. Charnaya // Applied Magnetic Resonance. – 2024. – Vol. 55, No. 8. – P. 819-826. – DOI 10.1007/s00723-024-01675-7. – EDN CAPTPS; Magnetic resonance and its applications. Spinus-2024, Spinus 2024 ; Conference date: 01-04-2024 Through 05-04-2024",

year = "2024",

month = jul,

day = "5",

doi = "10.1007/s00723-024-01675-7",

language = "English",

volume = "55",

pages = "819--826",

journal = "Applied Magnetic Resonance",

issn = "0937-9347",

publisher = "Springer Nature",

number = "8",

url = "http://spinus.spb.ru",

}

RIS

TY - JOUR

T1 - Impact of γ-Irradiation on Separation of Nuclear Spin-Relaxation Mechanisms Under Magnetic Saturation in a NaF Crystal

AU - Рочев, Андрей Михайлович

AU - Микушев, Владимир Михайлович

AU - Чарная, Елена Владимировна

N1 - Conference code: 21

PY - 2024/7/5

Y1 - 2024/7/5

N2 - Studies were carried out on the effect of additional continuous magnetic saturation of the NMR line on nuclear spin relaxation in a NaF single crystal before and after γ-irradiation. The times of magnetization recovery after inversion were measured at room temperature using a Bruker Avance 400 pulse spectrometer. The magnetic saturation was obtained by exciting a long additional resonance pulse. Two main contributions to relaxation for quadrupole 23Na nuclei, due to spin-phonon coupling in a regular crystalline lattice and due to magnetic centers, were separated by suppressing the latter contribution. γ-irradiation was shown to enhance spin relaxation, however, the magnetic saturation does not suppress the contribution of color centers. The times corresponding to 23Na relaxation due to spin-phonon coupling in a regular lattice, due to magnetic centers and color centers were evaluated. It was shown that the rate of spin–lattice relaxation for dipole 19F nuclei was not affected by magnetic saturation.

AB - Studies were carried out on the effect of additional continuous magnetic saturation of the NMR line on nuclear spin relaxation in a NaF single crystal before and after γ-irradiation. The times of magnetization recovery after inversion were measured at room temperature using a Bruker Avance 400 pulse spectrometer. The magnetic saturation was obtained by exciting a long additional resonance pulse. Two main contributions to relaxation for quadrupole 23Na nuclei, due to spin-phonon coupling in a regular crystalline lattice and due to magnetic centers, were separated by suppressing the latter contribution. γ-irradiation was shown to enhance spin relaxation, however, the magnetic saturation does not suppress the contribution of color centers. The times corresponding to 23Na relaxation due to spin-phonon coupling in a regular lattice, due to magnetic centers and color centers were evaluated. It was shown that the rate of spin–lattice relaxation for dipole 19F nuclei was not affected by magnetic saturation.

KW - nuclear spin-phonon coupling

KW - paramagnetic centers in crystals

KW - spin-lattice relaxation

KW - magnetic saturation of the NMR line

UR - https://www.mendeley.com/catalogue/3d7d1364-9bba-30c8-a10c-6ae3f3689047/

U2 - 10.1007/s00723-024-01675-7

DO - 10.1007/s00723-024-01675-7

M3 - Conference article

VL - 55

SP - 819

EP - 826

JO - Applied Magnetic Resonance

JF - Applied Magnetic Resonance

SN - 0937-9347

IS - 8

T2 - Magnetic resonance and its applications. Spinus-2024

Y2 - 1 April 2024 through 5 April 2024

ER -

ID: 121593068