Communications in Physics  

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Contents, Vol. 26 No. 1 (2016)

Phi Quang Van,Nguyen Thi Hong Van

Neutrino masses and mixing in an extended standard model acquiring an A4 flavour symmetry are considered. The corresponding three-neutrino mixing matrix obtained via a pertur- bative method allows us to determine the Dirac CP violation phase (\delta_{CP})... see more

Tran Huu Phat,Hoang Van Quyet

The ripplon modes of two segregated Bose-Einstein condensates (BECs) confined by one and two hard walls are respectively studied by means of the hydrodynamic approach within the Gross-Pitaevskii (GP) theory. For the system at rest we find that due to the ... see more

Bui Thi Ha Giang,Dao Thi Le Thuy

We study the production of Higgs and Z bosons which has been proposed as an option of e+e-e^{+}e^{-} collision at the ILC, CLIC with the polarization of the electron and positron beams in Randall-Sundrum model (RSM). The differential cross-sections are pr... see more

Ngo Van Tam,Vu Phi Tuyen,Phan Van Do

The excitation, emission spectra and and lifetime of Eu-doped borotellurite glasses (BTe) have been investigated. The sideband phonon energy and electron-phonon coupling strength (g) have been found. The intensity parameters O? were calculated from the em... see more

Phan Van Thuan,Ta Tram Anh,Le Canh Trung,Nguyen Tien Dung,Luong Thi Yen Nga,Dinh Xuan Khoa,Le Van Doai,Nguyen Huy Bang,Nguyen Van Ai

Optical bistability (OB) of an electromagnetically induced transparency (EIT) medium placed in a conventional unidirectional ring cavity is investigated numerically. The medium is excited by a coupling and probe laser lights via a five-level cascade schem... see more

Nguyen Thai Ha,Pham Duy Long,Nguyen Thanh Trung,Le Van Hong

Colloidal paste of TiO2 embedded with graphene (GS) was fabricated and used to spread TiO2_2 film photo-electrode of DSSC solar cells. The dye N179 and Iodine-based electrolyte were used in the DSSC solar cells. Raman scattering, SEM images were used to i... see more

Le Thi Hai Thanh,Nguyen Hoang Tuan,Luong Huu Bac,Dang Duc Dung,Phung Quoc Bao

Lead-free ferroelectric materials have attracted considerable attention due to the increasing potential application in environmental benign materials. Among lead-free ferroelectric materials, the Bi0.5Na0.5TiO3 (BNT) materials were more studied because it... see more

Nguyen Xuan Truong,Nguyen Van Vuong

The magnetic-field-assisted melt-spinning (FAMS) Nd10.5Fe72Co11B6.5 ribbons were spun in an external magnetic field of 3 kG. The prepared ribbons were ball-milled in xylene solvent for 30 minutes followed by adding in and mixing with the high-temperature ... see more

Nguyen Thi Thanh Bao,Dinh Van Trung,Dang Tuyet Phuong

Antibunching is a quantum effect demonstrating clearly the quantum nature of the radiation field. Its detection through measurements of the second order correlation function is a direct proof of the presence of single molecule or single nano particle. ... see more

Doan Quoc Khoa,Chu Van Lanh,Phan Xuan Sanh,Nguyen Thi Hong Sang,Le Thi Hoa,Nguyen Thi Thu,Bui Van Dung

In this paper, we will consider a model of nonlinear system with random telegraph noises and a Raman ring laser by modeling the laser pump light by a pregaussian process and find an exactly soluble equations for the stationary probability distribution of ... see more

Vu Duc Phu,Le Hong Khiem,A. P. Kobzev,M. Kulik

This paper presents the results of an experimental study of three samples containing various elements in the near-surface layers. The depth profiles of all the elements of different atomic masses from hydrogen to silver were investigated by... see more

Nguyen Quoc Hung,Vo Hong Hai,Tran Kim Tuyet,Ho Lai Tuan

The article describes a gamma ray spectrometer protected by a lead shield (Model 747E Canberra lead shield) and an active shield made of an 80~cm ×\times 80~cm ×\times 3~cm plastic scintillator plate in anticoincidence on top of the lead shield. The detec... see more