** Next:** Bibliography
** Up:** Transport Models
** Previous:** Guzdar-Drake Drift-Resistive Ballooning Model

For transport due to the kinetic ballooning mode, we compute and
the thermal diffusivities in terms of the pressure gradient .

and where is the ideal pressure gradient threshold for
the onset of the ideal ballooning mode in geometry,

Here, `cswitch(8)=1` by default, but is included for flexibility.
The coefficent in the expression for is set equal to
`cswitch(2)`.
The diffusivities are then given as:

where `fkb(1)`, `fkb(2)`,
`fkb(3)`, and `cswitch(5)`.
Note that the new version does not include
the (5/2) factor in the thermal diffusivities.
The relevant coding is:

transp_support
2001-12-21