Isovector soft dipole mode in 6Be

By using the 1H(6Li,6Be)n charge-exchange reaction, continuum states in 6Be were populated up to E_t=16 MeV, E_t being the 6Be energy above its three-body decay threshold. In kinematically complete measurements performed by detecting alpha+p+p coincidences, an E_t spectrum of high statistics was obtained, containing approximately ~5x10^6 events. The spectrum provides detailed correlation information about the well-known 0^+ ground state of 6Be at E_t=1.37 MeV and its 2^+ state at E_t=3.05 MeV. Moreover, a broad structure extending from 4 to 16 MeV was observed. It contains negative parity states populated by Delta L=1 angular momentum transfer without other significant contributions. This structure can be interpreted as a novel phenomenon, i.e. the isovector soft dipole mode associated with the 6Li ground state. The population of this mode in the charge-exchange reaction is a dominant phenomenon for this reaction, being responsible for about 60% of the cross section obtained in the measured energy range.Comment: 8 pages, 7 figure

Suppression of segregation and control of the structure of ingots and casting

The problem of segregation in large ingots, which are used in energy, heavy engineering, etc., is considered. A new approach to suppressing segregation processes is proposed. It consists in regulating the local crystallization time by organizing a surfaced local metal bath on the surface and adjusting the speed of its movement, while an ingot is formed layer by layer.Розглянуто проблему ліквації в крупних злитках, які використовуються в енергетиці, важкому машинобудуванні тощо. Запропоновано новий підхід щодо пригнічення лікваційних процесів. Він полягає в регулюванні локального часу кристалізації шляхом організації на поверхні, що наплавляється, локальної металевої ванни і регулюванні швидкості її переміщення, при цьому злиток формується шар за шаром.Рассмотрена проблема ликвации в крупных слитках, которые используются в энергетике, тяжелом машиностроении и др. Предложен новый подход к подавлению ликвационных процессов. Он заключается в регулировании локального времени кристаллизации путем организации на поверхности наплавляемой локальной металлической ванны и регулировании скорости ее перемещения, при этом слиток формируется слой за слоем

Synchronization of fractional order chaotic systems

The chaotic dynamics of fractional order systems begin to attract much attentions in recent years. In this brief report, we study the master-slave synchronization of fractional order chaotic systems. It is shown that fractional order chaotic systems can also be synchronized.Comment: 3 pages, 5 figure

Heat exchange in molten pool in liquid-phase melting of ore-coal pellets

Results of the heat exchange investigation in a pool in liquid-phase melting of the ore-coal pellets are presented. Dependence of heat-transfer coefficient from the slag to a pellet upon intensity of the slag mixing in the furnace pool is established.Изложены результаты исследования теплообмена в ванне при жидкофазной плавке рудно-угольных окатышей. Установлена зависимость коэффициента теплоотдачи от шлака к окатышу от интенсивности перемешивания шлака в ванне печи

Examination of the effect of oxygen on the absorption of nitrogen by liquid iron

12.00; Translated from Russian (Probl. Spetsial. Elektrometall. 1984 (21) p. 67-70)Available from British Library Document Supply Centre- DSC:9023.19(VR--2898)T / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

The zone of occurrence of physico-chemical processes in electroslag remelting

Translated from Russian (Problemy Spetsial'noi Elektrometallurgii 1988 v. 4(2) p. 70-75)Available from British Library Document Supply Centre- DSC:9023.19(VR-Trans--4023)T / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

Interaction of nitrogen with iron-vanadium alloys in plasma arc remelting with reduced pressure of gas above the melt

17.00; Translated from Ukranian (Probl. Spetsial. Elekrtometall. 1986 v. 2(3) p. 58-63)SIGLEAvailable from British Library Document Supply Centre- DSC:9023.19(VR--3664)T / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Production of tools from economically alloyed R2M5 high speed tool steel produced by plasma arc remelting

14.00; Translated from Russian (Probl. Spets. Elektrometall. 1987 v. 3(1) p. 51-56)SIGLEAvailable from British Library Document Supply Centre- DSC:9023.19(VR--3857)T / BLDSC - British Library Document Supply CentreGBUnited Kingdo