Equation of State and Statistical Distribution in a Macroscopic System

Physics of the Solid State - A representation is proposed for the statistical sum for a macroscopic body in the form of a Euclidean functional integral in which the body deformation is a classical...     

Optimization of the key steps of synthesis and study of the fundamental physicochemical properties of high energy compounds — 4-(2,2,2-trinitroethyl)-2,6,8,10,12-pentanitrohexaazaisowurtzitane and 4,10-bis(2,2,2-trinitroethyl)-2,6,8,12-tetranitrohexaazaisowurtzitane

Russian Chemical Bulletin - The key steps of the synthesis of two high energy compounds, namely, 4-(2,2,2-trinitroethyl)-2,6,8,10,12-pentanitrohexaazaisowurtzitane and...     

Extended number state basis and number-phase intelligent states of light field II. The reduced number-sine intelligent and Jackiw states

The number-sine intelligent state is introduced for the extended Hilbert space and reduced to serve as an approximation to the Jackiw number-sine intelligent state. Usual and modified statistical and uncertainty characteristics of these states are determined and compared. A new technique is used for reconstructing the crescent state of Kitagawa and Yamamoto and studying the properties of the reduced number-sine intelligent state.     

Search for DeltaS = 2 nonleptonic hyperon decays

A sensitive search for the rare decays Omega(-)--> Lambdapi(-) and Xi(0)--> ppi(-) has been performed using data from the 1997 run of the HyperCP (Fermilab E871) experiment. Limits on other such processes do not exclude the possibility of observable rates for |DeltaS| = 2 nonleptonic hyperon decays, provided the decays occur through parity-odd operators. We obtain the branching-fraction limits B(Omega(-)-->Lambdapi(-)) < 2.9 x 10(-6) and B(Xi(0)--> ppi(-)) < 8.2 x 10(-6), both at 90% confidence level.     

Numerical analysis of nanocluster formation within ns-laser ablation plume

The CIP method is used to calculate macroscopic plume expansion combined with the Zeldovich–Raiser theory for the cluster-formation process such as nucleation and growth. The effect of background gas and latent heat is examined in the one-dimensional case. The latent heats keep the plume temperature at 2500 K for a long period and this explains the delayed photoluminescence. Two contradicting experiments on the size dependence on ambient pressure are clearly explained and are attributed to the difference of laser energy. In two-dimensional simulation, a ‘mushroom-like’ plume shape is replicated, consistent with experimental results. Received: 17 January 2003 / Accepted: 8 February 2003 / Published online: 28 May 2003 RID="*" ID="*"Corresponding author. Fax: +81-3-5237-2860, E-mail: tohkubo@es.titech.ac.jp     

One-step cyclopropanation of alkynes with diiodomethane and triethylaluminum

Cyclopropanation of mono- and dialkyl-substituted alkynes under the action of CH₂I₂ and Et₃Al afforded the corresponding 1-alkyl- and 1,2-dialkyl-substituted 1,2-diethylcyclopropanes in 65—80% yields.