Papers

*Department of Physics, Invertis University, Bareilly (U.P.) -243 123 (India)
Department of Physics, Bareilly College, Bareilly (U.P.) – 243 005 (India)
E-mails: kamlesh.fphiiet@gmail.com,     sanjeev.sxn@gmail.com

We have computed differential cross section (DCS) for ionization of noble gas atoms by impact of positron (electron) using truncated coupled state Born approximation (TCSBA). High quality Hartree-Fock Slater orbitals are used to model the target wave function. We have already computed some ionization results1, 2, & 3 for noble gas series by impact of positron and electron as well, but in this paper, we are presenting for Ne, Ar, Kr & Xe atoms. We have compared DCS
results with other available theoretical results as well as experimental data. It is observed that full orthogonalization of target wave function significantly improves present results and provides better agreement with experimental data for the noble gas series. Our present results are found in excellent agreement with other calculations. However some discrepancies suggested that more theoretical as well as experimental work is required in future to improve the data.

Department of Chemistry, Sitaram Samarpan Mahavidyalaya, Naraini.Banda 210129, U.P. (India) Affiliated : Bundelkhand University, Jhansi
Email Address : rajendrakumartiwari101@rediffmail.com

In this paper we discuss the synthesis and self assembling behavior of new copolymers derived from fatty acid/ amino acid components. The dimers of linoleic acid (DLA) and tyrosine derived diphenols containing, alkyl ester pendent chains designated as “R” DTR, specific pendent chains were of ethyl (E) and hexyl (H). The polymer were found to be spontaneously self assemble into nanoparticles with size in range 196-239 nm and critical micelle concentration (CMC) of 0- 125-0-250 mg/ml. the self organization of these new polymeric system into micellar and nanospheric structures in aqueous environment was evaualted using ultra violet/visible UV-vis spectroscopy. For example. vitamins or antibacterial peptides for antibacterial coatings on medcal devices.