NPO EUROPE uses many types of neutron absorbsion 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 absorbsion material is to add boron (5% by weight) 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. Typical 50 mm thickness provides approximately 61% neutron attenuation.
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 polyethylen 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 50mm of borated polyethylen plastic, which is an excellent neutron radiation attenuator, integrated on top of 25 mm 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.
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 75 mm 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.