Slow scintillation time constants in NaI(Tl) for different interacting particles

Suppression of the slow component of scintillation light in BaF2

BaF2 is a common scintillator material used for the detection of gamma radiation due to its relatively high stopping power, radiation hardness and high luminescence. BaF2 is often used in gamma ray timing experiments because of the prompt decay component. It is well known that the light output from BaF2 has two decay components: a prompt one at 220nm with a decay constant of around 600 ps and a...

Interacting Particles on Finite

There is a well-established topic \interacting particle systems", treated in the books by Griieath 14], Liggett 17], and Durrett 11], which studies diierent models for particles on the innnite lattice Z d. All these models make sense, but mostly have not been systematically studied, in the context of nite graphs. Some of these models { the voter model, the antivoter model, and the exclusion pro...

Superweakly interacting massive particles.

We investigate a new class of dark matter: superweakly interacting massive particles (super-WIMPs). As with conventional WIMPs, super-WIMPs appear in well motivated particle theories with naturally the correct relic density. In contrast to WIMPs, however, super-WIMPs are impossible to detect in all conventional dark matter searches. We consider the concrete examples of gravitino and graviton co...

Mean field limit for interacting particles

Breathing mode for systems of interacting particles.

We study the breathing mode in systems of trapped interacting particles. Our approach, based on a dynamical ansatz in the first equation of the Bogoliubov-Born-Green-Kirkwood-Yvon hierarchy allows us to tackle at once a wide range of power-law interactions and interaction strengths, at linear and nonlinear levels. This both puts in a common framework various results scattered in the literature,...