Effect of neutron flux on LEDs?

Question

Do it yourself

Hello,
there is a neutron generator with an energy of 14 MeV (obtained on the basis of the reaction ³ T(d,n) ⁴ He) and an output of the order of 2 * 10 ¹¹ , there is a collimating device with a channel in the form of a truncated pyramid. It is necessary to install a "visualization system" of the irradiation field into the channel on a permanent basis (for example, in the Luch-1 gamma installation , a conventional incandescent lamp is used in the channel). During the operation of the generator, the backlight is off, but must remain in the channel.
In this regard, it is necessary to understand whether LEDs and LED strips can be used for these purposes, and how will they be affected by constant neutron radiation?

Answer 1

LEDs will degrade. Although wide-gap semiconductors (SiC, InP, InGaN) from which bright LEDs are made behave better on average than Si and Ge under irradiation, they will degrade anyway. Degradation of the phosphor of the white LEDs cannot also be ruled out.
As an option, you can try fiber-optic illumination: move the source outside the channel and transmit light through light guides.

Answer 2

Oh, thermonuclear mean? Of course, neutron radiation will negatively affect the LEDs and they will fail faster. Google found some research on this topic - it talks about reducing the brightness of LEDs.
Is it possible to make a “window” in the channel and shine through it like a mirror from a zone safe for electronics?

Answer 3

"DIY or DIY" - hmmm. There is 1 too inquisitive lad.

Answer 4

I would put a light guide, and I would take the LED out of the irradiation zone. Although, the light guide will also gradually darken.