Design, Construction, and Modeling of a ²⁵²Cf Neutron Irradiator

Table 4

Radiation measurements at the chamber access door.

Source location	Neutron dose rate	Gamma exposure rate
Nonirradiating position (down)	2 μSv/h; (0.2 mrem/h)	8 μGy/h; (0.9 mR/h)
Irradiation position (up)	42 μSv/h; (4.2 mrem/h)	0.15 mGy/h; (17 mR/h)