Hi guys, I am currently trying to figure out the best way to create a target of deuterated polyethylene for neutron detection. I have ~30g of this very expensive powder and need to determine the best way to create a thick target (thick as in ~5cm, not a thin film like is used for proton detection.) Given how expensive the powder is there is no room for error. I have regular polyethylene to practice with, however given the different melting temperatures etc I need more information. What is the best way I can create a solid target? I have read many papers and see methods including dissolving it in xylene and letting the xylene evaporate as well as compression techniques and some melting techniques, but all of these are tailored to creating very thin films. Any help or input is greatly appreciated, I am under a great deal of time pressure. I think it is most likely that I will be using a melting technique, but I absolutely can not burn the polyethylene, nor can there be any bubbles/impurities in the final product.