About Nikolai Sergeevich Mosyagin

NAME (given, patronymic, family):
Nikolai Sergeevich Mosyagin
28 November, 1969; Leningrad (now St.-Petersburg), Russia
Russian Federation
Petersburg Nuclear Physics Institute, Gatchina, St.-Petersburg district, 188300 Russia
2002-till present time, Petersburg Nuclear Physics Institute, Senior Research Scientist (equivalent to Assistant Professor).
2006, a member of the organizing committee of Eleventh European Workshop on Quantum Systems in Chemistry and Physics (St.-Petersburg, Russia).
2003, a referee for Millennium Science Initiative (Chile).
2000-2001, Petersburg Nuclear Physics Institute, senior researcher.
1996-2000, Petersburg Nuclear Physics Institute, researcher.
28.06.1996, PhD degree, thesis "Development of the Relativistic Effective Core Potential method".
1993-1996, Petersburg Nuclear Physics Institute, Gatchina, Russia, postgraduate student.
1987-1993, St.-Petersburg State University, Russia, student.
Best PhD researcher of Russian Academy of Sciences (award of Russian Science Support Foundation), 2004-2005.
Winner of competition among young scientists at the XIII symposium "Modern Chemical Physics" (Tuapse, Russia), 2001.
Talented young scientist (Russian Academy of Sciences), 2000-2002.
Soros postgraduate student, 1996.
Soros postgraduate student (International Soros Science Education Program for former USSR countries), 1995.
Grant of Russian Foundation for Basic Research, 2007.
Travel grant of Russian Foundation for Basic Research, 2007.
Grant of St.-Petersburg Scentific Center of Russian Academy of Sciences, 2007.
Personal scientific fellowship of the governor of Leningrad district (Russia), 2003-2004.
Winner of Regional competition for grants among postdoctoral scientists of St.-Petersburg (Russia), 2002.
Travel grant of Russian Foundation for Basic Research, 2002.
Grant of Russian Foundation for Basic Research for young scientists, 2001.
INTAS (International Association for the promotion of cooperation with the scientists from the New Independent States of the former Soviet Union) young scientist travel grant, 2001.
Travel grant of Russian Federal Purpose Program "Integration", 2000.
Grant of St.-Petersburg government, 2000.
Grant of St.-Petersburg government, 1999.
Grant of St.-Petersburg government, 1998.
Grant of St.-Petersburg government (Russia), 1997.
Methods for precise calculations of correlation structure of molecules with heavy atoms.
Relativistic effective core potential (pseudopotential).
Basis sets for correlation calculations.
Convergence improvement and intruder state problem in coupled-cluster calculations.
Generalized Relativistic Effective Core Potentials (GRECPs) for the atoms Hg through Rn were generated [Tupitsyn:1995, Mosyagin:1997] which accuracy was up to one order of magnitude higher than that of other tested RECPs with the same number of explicitly treated electrons in carried out test calculations [Mosyagin:1997, Mosyagin:2000, Isaev:2000]. Then, the other developments in the GRECP generation were suggested, which allow one to simulate the Breit interaction and Fermi nuclear charge distribution [Petrov:2004, Isaev:2005] as well as the correlations with the core electrons excluded from the GRECP calculations [Mosyagin:2005] by economic way but with very high precision. The generated potentials were used in precise calculations of the spectroscopic constants for the TlH [Titov:2001], HgH [Mosyagin-JCP:2001] and E112H [Mosyagin-JCP:2006] molecules.
The optimal GRECP versions for the Ba, Yb, Tl, Pb, I, Hf, and Xe atoms were generated and employed for calculations of the P,T-odd parameters for the BaF, YbF, TlF, PbO*, HI+, HfF+ molecules [Titov-PRL:1996, Kozlov:1997, Mosyagin-JPB:1998, Petrov:2002, Isaev-PRA:2004, Petrov:2005, Petrov-PRA:2007] and the Xe clusters [Isaev:2007] which are necessary to interpret the results of fundamental experiments carried out in search of parity (P) and time-reversal (T) invariance violation and to plan a new generation of such experiments.
A new procedure for the correlation basis set generation was proposed [Mosyagin:2000, Mosyagin-JCP:2001]. This procedure allows one to generate "equivalent" basis sets for the RECP (two-component) and the all-electron (four-component) calculations and to control efficiently the quality of the basis sets in description of correlations in different space regions. Moreover, the counterpoise corrections for these basis sets are practically undependent on some particular selection of the different valence atomic states for their calculations.
A new iteration scheme for coupled-cluster (CC) calculations was proposed [Mosyagin-JPB:2001] which improves significantly convergence of CC iterations and thus, solves partly the intruder state problem.
For list of my last publications, see that page.
You can contact me by
CONVENTIONAL MAIL: 188300, Russia, St.-Petersburg district, Gatchina, Petersburg Nuclear Physics Institute
PHONE: +7(81371)46106
FAX: +7(81371)36051
E-MAIL: mosyagin@mail.spbnit.ru

My diplomas:

Diploma of Soros Foundation

PhD diploma

Diploma of St.-Petersburg Government

Laureate of XIII Symposium on Modern 
Chemical Physics

Diploma of Senior Researcher

Diploma of Leningrad district Governor

Diploma of Russian Science Support Foundation