background: solid targets that consist of powder and electrodeposited targets are used commonly to produce radionuclides by accelerators. since silver is easily electrodeposited in cyanide baths and has a very excellent thermal conductivity, the electrodeposited target is preferable to produce 109cd. to avoid cracking or peeling of the target during bombardment, it should have a level surface a...

It is shown how thinking in terms of the protocol used can help clarify problems related to anthropic reasoning, such as the Doomsday Argument and the Sleeping Beauty Problem. There is a complex of problems related to anthropic reasoning, the Doomsday Argument [Leslie 1996] and the Sleeping Beauty Problem [Elga 2000] perhaps chief among them, that have generated a great deal of heat in the phil...

We consider the following edge coloring game on a graph G. Given t distinct colors, two players Alice and Bob, with Alice moving ®rst, alternately select an uncolored edge e of G and assign it a color different from the colors of edges adjacent to e. Bob wins if, at any stage of the game, there is an uncolored edge adjacent to colored edges in all t colors; otherwise Alice wins. Note that when ...

In today's lecture, we will discuss the application of expander graphs to error-correcting codes. More specifically, we will describe the construction of linear-time decodable expander codes due to Sipser and Spielman. We begin with some preliminaries on error-correcting codes. (Several of the proofs presented in this lecture are adapted from the lecture notes of Venkatesan Guruswami's course o...

Excitation functions for the Y(p,x)Zr, Y(p,x)Y, Y(p,x)Sr and Y(p,x)Rb reactions were measured by a stacked foil activation technique in the energy range 15-80 MeV. The production for the long lived products like Zr, and Y are significantly larger than that of Mo+p, Nb+p and Zr+p processes. The productions of the medical isotopes, Sr and Sr are also effective by Y+p process using 80 MeV beam. Th...

The complexity of large-scale scientiic simulations often necessitates the combined use of multiple software packages developed by diierent groups in areas such as adaptive mesh manipulations, scal-able algebraic solvers, and optimization. Historically , these packages have been combined by using custom code. This practice inhibits experimentation with and comparison of multiple tools that prov...

The concept of Virtual Monte Carlo (VMC) has been developed by the ALICE Software Project to allow different Monte Carlo simulation programs to run without changing the user code, such as the geometry definition, the detector response simulation or input and output formats. Recently, the VMC classes have been integrated into the ROOT framework, and the other relevant packages have been separate...

ACORDE is one of the ALICE detectors, presently under construction at CERN. It consists of an array of plastic scintillator counters placed on the three upper faces of the ALICE magnet. It will act as a cosmic ray trigger, and, together with other ALICE sub-detectors, will provide precise information on cosmic rays with primary energies around 10 ÷ 10 eV. Here we describe the design of ACORDE a...