Table 2.

Energy spectrum at the exit of the collimator.

Novac7				LIAC
Nominal Energy (MeV)	$E_{\mathit{peak}}(MeV)$	$E_{\mathit{average}}(MeV)$	$E_{\mathit{max}}(MeV)$	Nominal Energy (MeV)	$E_{\mathit{peak}}(MeV)$	$E_{\mathit{average}}(MeV)$	$E_{\mathit{max}}(MeV)$
5	5.9	4.7	6.8	6	6.8	5.5	8.0
7	7.1	5.9	8.4	8	8.4	6.8	10.0
9	8.2	6.8	9.7	10	11.0	9.0	12.7

Notes: Epeak is the most probable energy, Eaverage is the mean energy, and Emax is the maximum energy.