vice.singlezone.tau_ia
======================

Type : real number

Default : 1.5

The e-folding timescale in Gyr of an exponentially decaying delay-time
distribution in type Ia supernovae.

.. note::

	Because this is an e-folding timescale, it only matter when the
	attribute ``RIa`` == "exp".

.. seealso:: vice.singlezone.RIa

Example Code
------------
>>> import vice
>>> sz = vice.singlezone(name = "example", RIa = "exp")
>>> sz.tau_ia = 1.0
>>> sz.tau_ia = 1.5
>>> sz.tau_ia = 2.0