Specific Features of Studying the Paramagnetic Relaxation of Spins by the Carr–Purcell–Meiboom–Gill Method Related to the Superposition of Echo Signals

Electron Spin Relaxation Mechanisms of Atomic Hydrogen Trapped in Silsesquioxane Cages: The Role of Isotope Substitution

“…is a typical dynamical decoupling method that performs very well in nuclear magnetic resonance (NMR) spectroscopy [24]. However, in EPR spectroscopy the unwanted stimulated echo, which appears as a consequence of partial excitation and non-ideal mw pulses, overlaps with the desired refocused primary echo [25]. Since this stimulated echo decays with T 1 , the CPMG sequence could erroneously result in longer than real T 2 values and, therefore, care has to be exercised when used.…”

Long Electron Spin Coherence Times of Atomic Hydrogen Trapped in Silsesquioxane Cages

“…The Carr–Purcell–Meiboom–Gill (CPMG) sequence, , (π/2) x {−τ/2 – (π) y – τ/2 – echo} N , is a typical dynamical decoupling method that performs very well in nuclear magnetic resonance (NMR) spectroscopy . However, in EPR spectroscopy the unwanted stimulated echo, which appears as a consequence of partial excitation and nonideal mw pulses, overlaps with the desired refocused primary echo . Since this stimulated echo decays with T 1 , the CPMG sequence could erroneously result in longer than real T 2 values, and therefore, care has to be exercised when used.…”