Wigner tunneling correction factor

This expression is called the Wigner tunneling correction factor, and is valid for a small degree of tunneling (high and/or broad barrier, hv high temperatures (hv correction factor is larger than one. 

The leading quantum correction to TST at high temperatures is the Wigner tunneling correction [28], that is, a multiplicative factor ... 

In the discussion of TST in Chapter 4 tunneling was introduced as a multiplicative correction factor to the TST rate constant. TST tunneling is usually discussed in one of three approximations. In first order (for small tunneling), Wigner has shown the correction is given by the u2/24 law... 

The simplest tunneling factor for transition-state theory is that proposed by Wigner in which the transmission coefficient is the leading quantal correction to conventional TST to lowest order in The resulting corrected canonical rate constant is... 

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