Neutron position detector
AssigneeToshiba Electron Tubes & Devices Co., Ltd.
InventorsNoriyuki Hikida, Kiyofumi Ookawa, Kazuya Ishizawa
Life of this patent
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Abstract
According to one embodiment, a neutron position detector includes a gas including a 3He gas and an additive gas. The gas has a gas composition being set so that a total of ranges of a proton and a tritium in the gas is 2.0 to 2.7 mm. The partial pressures are in an extent surrounded by a first gas composition point of the 3He gas of 5 atm and the additive gas of 1.6 atm, a second gas composition point of the 3He gas of 5 atm and the additive gas of 2.3 atm, a third gas composition point of the 3He gas of 20 atm and the additive gas of 0.6 atm, and a fourth gas composition point of the 3He gas of 20 atm and the additive gas of 1.3 atm.
Claims4
A neutron position detector comprising:
- a tubular envelope serving as a cathode;
- an anode disposed on an axis in the envelope;
- and
- a gas including a 3He gas and an additive gas, the gas being enclosed in the envelope,
- the gas having a gas composition being set so that a total of ranges of a proton and a tritium in the gas produced by a reaction of a neutron incident into the envelope and the 3He gas is 2.0 to 2.7 mm, the partial pressures being in an extent surrounded by a first gas composition point of the partial pressure of the 3He gas of 5 atm and the partial pressure of the additive gas of 1.6 atm, a second gas composition point of the partial pressure of the 3He gas of 5 atm and the partial pressure of the additive gas of 2.3 atm, a third gas composition point of the partial pressure of the 3He gas of 20 atm and the partial pressure of the additive gas of 0.6 atm, and a fourth gas composition point of the partial pressure of the 3He gas of 20 atm and the partial pressure of the additive gas of 1.3 atm.
Dependencies are inferred from the claim text.