NPO EUROPE uses many types of neutron absorbtion materials such as polyethylene, borated polyethylene and naphthalene to thermalize and capture neutrons.
The hydrogen contained in the polyethylene thermalize significantly neutrons .
Another rapid neutrons absorption material is to add boron in the polyethylene
The probability of neutron capture by a boron is more than 10,000 times that of a hydrogen nucleus, regardless of the neutron energy. The probabilities themselves increase significantly when the neutron is thermalized hydrogen).
Borated polyethylene shields are perfect for reducing neutron dose in a general area.
Borated polyethylene is incorporated in NPO shield bells, lid shields, and other applications where neutron radiation is the biggest concern.
T FLEX® (tungsten / bismuth / iron) + boron.
A combination of benefits! Our T-FLEX® is an excellent attenuator for gamma radiation. We can add to our matrix boron to make a neutron shielding as well.
Solid borated polyethylen shield panels
Solid borated polyethylene shield panels are built with mitered edges to eliminate streaming gaps and holes for attachment via tie-wrap / carabiner / S-hook to hand rails, etc.
Canister Lid Shields
This shielding consists of borated polyethylene plastic, which is an excellent neutron radiation attenuator, integrated on top of T-FLEX® Tungsten. This shielding system provides about 75% dose deduction from neutron radiation as well as a significant amount of dose reduction from gamma sources. Pieces are modular, weigh less than 18 kg each, and are split per the specifications from the canister manufacturer.
Example of application: Porthole Shield
Our client has requested a neutron shielding for a porthole that protects operators from passing in front of it.
We have proposed a shielding composed of borated polyethylene and 2 handles to enable to manipulate it with ease.
The shielding attenuates> 75% of neutrons.
This shielding is strongly magnetized to the door thanks to 4 integrated magnets.