Think about the ionization energies of hydrogen (13.6 eV) and helium (1st 24.6 eV, 2nd 54.4 eV) so they will be UV or very soft X-rays, which would not ionize He atoms. Look at the emission or line spectra of H and He.Neutroniclad said:When the He(n,p)t reaction occurs, will proton cause any secondary x-ray photons since it de-accelerates in matter.
A He-3 detector is a type of gas-filled radiation detector that uses helium-3 gas as the detection medium. It is commonly used in neutron detection and is known for its high sensitivity and efficiency.
A He-3 detector can detect signals from neutrons and other types of radiation, such as alpha and beta particles. It can also detect thermal neutrons, which are low-energy neutrons that are commonly used in research and medical applications.
A He-3 detector works by using the helium-3 gas as a target for incoming neutrons. When a neutron collides with a helium-3 nucleus, it produces a reaction that releases a high-energy proton and tritium atom. These particles create an electric signal that can be measured by the detector and used to determine the presence and intensity of the neutron.
There are several advantages to using a He-3 detector, including its high sensitivity and efficiency in detecting neutrons, its ability to detect thermal neutrons, and its ability to operate at room temperature without the need for cooling systems. It is also relatively compact and can be easily incorporated into different experimental setups.
One limitation of a He-3 detector is that it is not suitable for detecting high-energy neutrons, as these can cause damage to the helium-3 gas and reduce its efficiency. Additionally, helium-3 gas is a limited resource and can be expensive, making it less accessible for certain applications. There are also alternative detectors, such as boron-10 or lithium-6 detectors, that may be more suitable for specific research or industrial purposes.