thanks. I i find that very interesting :], what is it about the arrangement of electrons in the beryllium that means there is no or less photoelectric absorption, physics teacher never liked to talk about that. :/ and does the photoelectric absorption always result in the release of electromagnetic waves of a different wavelength :/ How broad would the range of wavelengths be released and what wavelength :/ For the home project i was thinking of something simple lol just to prove i am getting fusion. im getting closer, just ordered the microwave caps 😀