Research output: Contribution to journal › Article › peer-review
X-band EPR setup with THz light excitation of Novosibirsk Free Electron Laser : Goals, means, useful extras. / Veber, Sergey L.; Tumanov, Sergey V.; Fursova, Elena Yu et al.
In: Journal of Magnetic Resonance, Vol. 288, 01.03.2018, p. 11-22.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - X-band EPR setup with THz light excitation of Novosibirsk Free Electron Laser
T2 - Goals, means, useful extras
AU - Veber, Sergey L.
AU - Tumanov, Sergey V.
AU - Fursova, Elena Yu
AU - Shevchenko, Oleg A.
AU - Getmanov, Yaroslav V.
AU - Scheglov, Mikhail A.
AU - Kubarev, Vitaly V.
AU - Shevchenko, Daria A.
AU - Gorbachev, Iaroslav I.
AU - Salikova, Tatiana V.
AU - Kulipanov, Gennady N.
AU - Ovcharenko, Victor I.
AU - Fedin, Matvey V.
N1 - Publisher Copyright: © 2018 Elsevier Inc.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - Electron Paramagnetic Resonance (EPR) station at the Novosibirsk Free Electron Laser (NovoFEL) user facility is described. It is based on X-band (∼9 GHz) EPR spectrometer and operates in both Continuous Wave (CW) and Time-Resolved (TR) modes, each allowing detection of either direct or indirect influence of high-power NovoFEL light (THz and mid-IR) on the spin system under study. The optics components including two parabolic mirrors, shutters, optical chopper and multimodal waveguide allow the light of NovoFEL to be directly fed into the EPR resonator. Characteristics of the NovoFEL radiation, the transmission and polarization-retaining properties of the waveguide used in EPR experiments are presented. The types of proposed experiments accessible using this setup are sketched. In most practical cases the high-power radiation applied to the sample induces its rapid temperature increase (T-jump), which is best visible in TR mode. Although such influence is a by-product of THz radiation, this thermal effect is controllable and can deliberately be used to induce and measure transient signals of arbitrary samples. The advantage of tunable THz radiation is the absence of photo-induced processes in the sample and its high penetration ability, allowing fast heating of a large portion of virtually any sample and inducing intense transients. Such T-jump TR EPR spectroscopy with THz pulses has been previewed for the two test samples, being a useful supplement for the main goals of the created setup.
AB - Electron Paramagnetic Resonance (EPR) station at the Novosibirsk Free Electron Laser (NovoFEL) user facility is described. It is based on X-band (∼9 GHz) EPR spectrometer and operates in both Continuous Wave (CW) and Time-Resolved (TR) modes, each allowing detection of either direct or indirect influence of high-power NovoFEL light (THz and mid-IR) on the spin system under study. The optics components including two parabolic mirrors, shutters, optical chopper and multimodal waveguide allow the light of NovoFEL to be directly fed into the EPR resonator. Characteristics of the NovoFEL radiation, the transmission and polarization-retaining properties of the waveguide used in EPR experiments are presented. The types of proposed experiments accessible using this setup are sketched. In most practical cases the high-power radiation applied to the sample induces its rapid temperature increase (T-jump), which is best visible in TR mode. Although such influence is a by-product of THz radiation, this thermal effect is controllable and can deliberately be used to induce and measure transient signals of arbitrary samples. The advantage of tunable THz radiation is the absence of photo-induced processes in the sample and its high penetration ability, allowing fast heating of a large portion of virtually any sample and inducing intense transients. Such T-jump TR EPR spectroscopy with THz pulses has been previewed for the two test samples, being a useful supplement for the main goals of the created setup.
KW - Electron paramagnetic resonance
KW - Free electron laser
KW - NovoFEL
KW - T-jump EPR
KW - THz radiation
KW - CONTINUOUS-WAVE
KW - ESR
KW - HIGH-FIELD
KW - STATE
KW - PARAMAGNETIC-RESONANCE
KW - METHODOLOGY
KW - SPECTROSCOPY
KW - FREQUENCY EPR
KW - SPIN-RESONANCE
KW - MAGNETS
UR - http://www.scopus.com/inward/record.url?scp=85041545988&partnerID=8YFLogxK
U2 - 10.1016/j.jmr.2018.01.009
DO - 10.1016/j.jmr.2018.01.009
M3 - Article
C2 - 29360045
AN - SCOPUS:85041545988
VL - 288
SP - 11
EP - 22
JO - Journal of Magnetic Resonance
JF - Journal of Magnetic Resonance
SN - 1090-7807
ER -
ID: 10426748