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- Szymanski, J. J., et al.
(author)
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A study of the decay mu –> e gamma by the MEGA experiment
- 1996
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In: Proceedings, 9th Meeting, DPF'96, Minneapolis, USA, August 11-15, 1996. Vol. 1, 2.. ; , s. 1450-1452
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Conference paper (peer-reviewed)
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- Cooper, M. D., et al.
(author)
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Construction and performance of MEGA's low-mass, high-rate cylindrical MWPCs
- 1998
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In: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier. - 0168-9002 .- 1872-9576. ; 417:1, s. 24-49
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Journal article (peer-reviewed)abstract
- A design for extremely low mass, high-resolution multiwire proportional chambers (MWPC) was achieved by the MEGA collaboration in its experiment to search for the lepton family number violating decay μ → eγ. To extend the present branching ratio limit by over an order of magnitude, these MWPCs were operated in high particle fluxes. They showed minimal effects of aging, and evidenced spatial and energy resolutions for the orbiting positrons from muon decay which were consistent with our design parameters. The unique features of these chambers, their assembly into the MEGA positron spectrometer, and their performance during the experiment are described in this paper.
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- Vomacka, P., et al.
(author)
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Influence of ZrO2 Addition on Melting Kinetics of a YSiAlO Glass-Ceramic
- 1996
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In: Journal of the European Ceramic Society. - : Elsevier BV. - 0955-2219 .- 1873-619X. ; 16:11, s. 1245-1251
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Journal article (peer-reviewed)abstract
- A ZrO2-free YSiAlO glass of composition 27Y: 42Si:31Al in equivalent % and one with the addition of wt% ZrO2 were prepared in a nitrogen atmosphere at 1700 °C. These glasses were treated in a nitrogen atmosphere at a controlled rate, during which the glass partially crystallizes to form a glass-ceramic. Under continued heating melting occurs. This behaviour was monitored by differential thermal analysis, scanning electron microscopy and X-ray diffraction. The original dendritic appearance of the crystallized microstructures changed to a blocky one in the early stages of the melting process. The ZrO2 addition was found to increase the kinetics of the phase transformations occurring during the melting.
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