Relaxation of powerful electron beam in air in a strong inhomogeneous magnetic field

Numerical calculations of the relaxation of a powerful (0.6 MW) high-energy (0.2 MeV) beam in air (P=1 atm) in a strong solenoidal magnetic field are undertaken by the combined-code method, including the Monte Carlo method for the calculation of beam evolution, the characteristic method for the calculation of the divergence of the radiant flux, and the Pismen-Rekford method for the calculation of the temperature field of air. The heat-liberation zone and intensity in the chamber are calculated, as well as the air temperature and the beam bremsstrahlung, and the results are compared with experiment.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 69–73, July, 1990.     

Fluorobenzo-1,4-thiazine oxides from bis-(vinylsulfinyl)-and bis(vinylsulfonyl)-fluorobenzenes and 2-aminoethanol

It has been established that 1, 2, 4, 5-tetrafluoro-3, 6-bis (vinylsulfinyl)- and 1, 2, 4, 5-tetrafluoro-3, 6bis(vinylsulfonyl)benzenes react with 2-aminoethanol by nucleophilic addition at the activated double bond with replacement of fluorine atoms on the benzene ring by the amino group of 2-aminoethanol to give 4, 9-bis(2 hydroxyethyl)-5,10-difluoro-1, 2, 3, 4, 6, 7, 8, 9-octahydrobenzo[1, 2-b; 5, 4-b]di-1, 4-thiazine 1,6-dioxide and 1, 1, 6, 6-tetraoxide respectively.Irkutsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences (SO RAN), Irkutsk 664033. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1195–1198, September, 1996. Original article submitted June 5, 1996.Deceased     

2-[(trifluoroacetyl)amino]benzoquinone and the hydrochloride and perchlorate salts of 2-aminohydroquinone

Hydrogen bonding parameters for the title materials are reported. 2-[(trifluoroacetyl)amino]benzoquinone crystallizes in the monoclinic space group P2 ₁/c, with a = 18.195(4), b = 5.110(1), c = 9.635(2), = 104.22(3)°, V = 868.4(3) ų, and Z = 4. This compound exhibits two weak intramolecular hydrogen bonds. The first is between a hydrogen atom of the quinone ring and the carbonyl oxygen of the trifluoroacetamide group; it has a distance of 2.24 Å and a C—HsO angle of 122°. The second is between the hydrogen atom of the trifluoroacetamide group and a quinone carbonyl group; it has a distance of 2.26 Å and a N—HsO angle of 107°. 2-Aminohydroquinone hydrochloride crystallizes in the orthorhombic space group Pca2₁, with a = 16.220(3), b = 5.211(1), c = 8.719(2), V = 737.0(2) ų, and Z = 4. 2-Aminohydroquinone perchlorate crystallizes in the orthorhombic space group P2₁2₁2₁, with a = 7.110(1), b = 7.139(1), c = 18.043(4), V = 915.8(3) ų, and Z = 4. All active hydrogens of the two salts exhibit intermolecular hydrogen bonds that serve to organize a three-dimensional framework for each case.     

Synthesis of substituted thiophenes and thiazolidines from 1-amino-2-benzoyl-2-(1-pyridinio)ethylene-1-thiolates

It was found that alkylation of Z-isomers of 1-amino-2-benzoyl-2-(1-pyridinio)-ethylene-1-thiolate with phenacyl bromides proceeds regioselectively with formation of Z-isomers of bromides of 1-amino-2-benzoyl-2-(1-pyridinio)-1-phenacylthioethylenes, which are used in the synthesis of not easily accessible thiophenes and thiazolidines.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1637–1642, July, 1991.     

Binding energies of nuclei and their density distributions in a nonlocal extended Thomas-Fermi approximation

Basic properties of the ground states of spherical nuclei are investigated in a nonlocal extended Thomas-Fermi approximation under the assumption of Skyrme forces. It is shown that, for nuclei occurring near the β-stability line, the binding energies, the root-mean-square radii, and the density distributions found on this basis agree well with experimental data. Binding energies, root-mean-square radii, and density distributions are also calculated for the ground states of nuclei lying far off the β-stability line and for superheavy elements. For the proton, the neutron, and the total particle density, the thickness of the diffuse layer is investigated as a function of the number of neutrons in tin isotopes.     

2,2-Dialkoxyoxetanes

Conclusions 2,2-Dialkoxy-4-trihalomethyloxetanes are formed under mild conditions without irradiation from 1,1-dialkoxyethylenes and trihaloacetaldehydes; the reaction probably proceeds via a mechanism with cyclic electron transfer.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 668–670, March, 1972.     

Analysis of deformations of the Earth's crust by laser interferometers

Results of measurement of phugoid oscillations of the Earth by a laser interferometric complex, which contains two interferometers of Michelson type, are given. Using the results of 900 h of processing, the spectrum of oscillations of the Earth in the range of periods from 20 to 310 min is obtained as well as the spectrum of free oscillations of the Earth in the seismic quiet time. The multiplet spectrum of oscillations of the Earth in the interval of 160 min is isolated.Translated from Dinamicheskie Sistemy, No. 9, pp. 60–65, 1990.     

Characteristics of the stages of an ion-convection pump

Results are presented from theoretical and experimental studies of a pump for handling insulating liquids. Various types of ionizer are compared.Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, Vol. 9, No. 4, pp. 154–158. July–August, 1968.