2014 We have investigated the dichroic properties and the existence of metastable excited states of several colour centres created by X-irradiation in CaF2 : Na. According to our results absorption bands peaking at 600, 385 and 322 nm are associated to the same centre which behaves optically as orthorhombic. The lack of observation of a metastable state is in favour of the F+2A model for this c...

Lutetium-177, one of the current global research hotspots for medical isotopes, can be produced by reactor irradiation lutetium-176, which and processed with assistance electron beam physical vapor deposition (EB-PVD). The metal evaporation process is an important part EB-PVD, aims to convert solid into atomic vapor. distribution each macroscopic characteristic quantity such as thermal populati...

We investigate the close connection between metastability of the reversible diffusion process X defined by the stochastic differential equation dXt =−∇F (Xt)dt+ √ 2εdWt, ε > 0, and the spectrum near zero of its generator −Lε ≡ ε∆−∇F ·∇, where F :R → R and W denotes Brownian motion on R. For generic F to each local minimum of F there corresponds a metastable state. We prove that the distribution...

Markov state models have become very popular for the description of conformation dynamics of molecules over long timescales. The construction of such models requires a partitioning of the configuration space such that the discretization can serve as an approximation of metastable conformations. Since the computational complexity for the construction of a Markov state model increases quadratical...

I. Tanackov, V. Bogdanović, Đ. Ćosić, B. Lalić, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia F. Sinani, Ministry of Transport and Communications, Skopje, Republic of Macedonia A complete system of events of nonlinear processes in complex dynamical systems describes the evolution of the distribution. Diff erent stages of evolution of the distribution declared stable, m...

Dynamics in nature often proceed in the form of rare transition events: The system under study spends very long periods of time at various metastable states; only very rarely it hops from one metastable state to another. Understanding the dynamics of such systems requires us to study the ensemble of transition paths between the different metastable states. Transition path theory is a general ma...