The Conference on Eastern European Marxist Aesthetics, Sichuan University, Chengdu, November 2016. Abstracts from Proceedings

Abstract

who is the Chief Expert of the China key project of philosophy and social science: 'Bibliography and Research on Eastern European Marxist Aesthetics'. More than 30 scholars from the project team, including Professor Peter Beilharz and Dr. Sian Supski, representing Thesis Eleven, concentrated on topics of Eastern European Marxist aesthetics, such as philosophy of praxis, film aesthetics, music aesthetics, spatial aesthetics, semiotics, cultural theory and so on, from the perspectives of Soviet Union and Russian Marxism, Western Marxism and Chinese Marxism.This was the first public collaboration between the Sichuan team and members of Thesis Eleven. It resulted in an agreement to collaborate further, not least given our shared interests in the work of critical theory and Heller, Markus and Bauman, and others, under this broad canopy. Fu Qilin, a world-leading scholar on the work of Heller, has been appointed an advisory editor of the journal, and his Centre is now affiliated with other participants in our global network. We publish the following abstracts as a

Experimental study on the Ag L-shell X-ray production cross-sections with thick-target method induced by positrons up to 9 keV

“…On-line monitoring technology of slow positron beam intensity. Since the intensity of a positron beam from 22 Na radioactive source is low (about 10 4 -10 5 n/s [3,4,[6][7][8]22]), it is difficult to acquire the positron beam intensity by using a Faraday cup. Here we applied an on-line acquisition method of positron beam intensity developed by our group [8], i.e., an HPGe detector was used for real time measurement of the annihilation γ-rays from the thick target induced by positrons.…”

“…Its value was determined by Monte Carlo simulation using the PENELOPE-2005 code [21]. The values of ξ(E 0 ) for Ag target in this work are shown in table 1; ε EXP is the HPGe detection efficiency for 511 keV γ photon, it was measured by using a 22 Na standard point source placed at the target position; ε MC is similar to ε EXP but calculated with the PENELOPE-2005 code [21].…”

“…To the best of our knowledge, the measurements for atomic inner-shell ionization or X-ray production cross-sections by positron impact near the threshold energy are restricted to the K shell of Ti [6,7], Cu [3] and Ag [2], L shell of Ag [3,4], In and Sn [4], L3 sub-shell of Au [2], M shell of Pb and Bi [8]. In the above experimental studies, the positron beams were all generated by the slow positron beam device based on the 22 Na radioactive source, and except for refs. [7,8], the positron beam intensities were all acquired by using the off-line method, which assumes the beam current is almost constant [2][3][4][5][6] in the experiment, the beam intensities are all determined at the beginning of the experiment.…”

“…[7,8], the positron beam intensities were all acquired by using the off-line method, which assumes the beam current is almost constant [2][3][4][5][6] in the experiment, the beam intensities are all determined at the beginning of the experiment. As we know, the intensity of the positron beam produced from a 22 Na positron source is low, in general, less than 10 6 n/s; as a result, the measurement for each incident energy requires a long time, e.g., 2-3 days [3,6]. However, the 22 Na radioactive source has a relatively short half-life, i.e., 2.6 years.…”

“…As we know, the intensity of the positron beam produced from a 22 Na positron source is low, in general, less than 10 6 n/s; as a result, the measurement for each incident energy requires a long time, e.g., 2-3 days [3,6]. However, the 22 Na radioactive source has a relatively short half-life, i.e., 2.6 years. Therefore, the attenuation of the beam current could not be ignored during the measurements.…”