Is it possible to produce next generation of UCN sources with density 103 - 104 cm-3
Serebrov A.P., Mityukhlyaev V.A., Zakharov A.A., Nesvizhevsky V.V., Kharitonov A.G.
The analysis of evolution of UCN sources is presented. It is shown that the gain factor of about 104 and the UCN density of about 103 104 cm"3 can be obtained by means of solid D2 at 4K.