scholarly journals Electron-spin polarization of photoions produced through photoionization from the laser-excited triplet state of Sr

2004 ◽  
Vol 120 (4) ◽  
pp. 1806-1812 ◽  
Author(s):  
Nobuaki Yonekura ◽  
Takashi Nakajima ◽  
Yukari Matsuo ◽  
Tohru Kobayashi ◽  
Yoshimitsu Fukuyama
Keyword(s):  
Triplet State ◽  
Spin Polarization ◽  
Electron Spin ◽  
Electron Spin Polarization ◽  
Excited Triplet State ◽  
Excited Triplet

Optical Detection of NQR: Crystal Field and Matrix Effects on Halogenated Organic Molecules

1986 ◽  
Vol 41 (1-2) ◽  
pp. 425-430 ◽  
Author(s):  
C. v. Borczyskowski
Keyword(s):  
Triplet State ◽  
Spin Polarization ◽  
Optical Pumping ◽  
Organic Molecules ◽  
Matrix Effects ◽  
Electron Spin Polarization ◽  
Excited Triplet State ◽  
Excited Triplet ◽  
Defect Site ◽  
Nmr Sensitivity

Electron spin polarization or alignment achieved in the excited triplet state of organic molecules can be transferred into nuclear spin polarization (alignment) during an optical pumping cycle. Due to this effect, quadrupole resonance (NQR) investigations of nuclei with concentrations of 10-5 molar are possible in the electronic singlet ground and excited triplet state in one and the same experiment by the applied optical pumping cycle. By this conventional NMR sensitivity is enhanced by several orders of magnitude, enabling investigations of defect site structures in molecular crystals.

Electron Spin Polarization Transfer from Excited Triplet Porphyrins to a Nitroxide Radical via a Spin Exchange Mechanism

1995 ◽  
Vol 99 (47) ◽  
pp. 17082-17084 ◽  
Author(s):  
Jun-ichi Fujisawa ◽  
Kazuyuki Ishii ◽  
Yasunori Ohba ◽  
Masamoto Iwaizumi ◽  
Seigo Yamauchi
Keyword(s):  
Spin Polarization ◽  
Electron Spin ◽  
Spin Exchange ◽  
Nitroxide Radical ◽  
Polarization Transfer ◽  
Exchange Mechanism ◽  
Electron Spin Polarization ◽  
Excited Triplet
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