Re: Guten Abend

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Geschrieben von Harald Kautz-Vella am 28. August 2006 14:17:40:

Als Antwort auf: Guten Abend geschrieben von Maxemilian am 25. August 2006 19:51:04:

Lieber Maxemilian,

zum Thema Kavitation und Gammastrahlen...:


Plasma formation and temperature
measurement during single-bubble
cavitation
David J. Flannigan & Kenneth S. Suslick
Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana,
Illinois 61801, USA
............................................................................................................................................................................
Single-bubble sonoluminescence (SBSL1–5) results from the
extreme temperatures and pressures achieved during bubble
compression; calculations have predicted6,7 the existence of a
hot, optically opaque plasma core8 with consequent bremsstrahlung
radiation9,10. Recent controversial reports11,12 claim the
observation of neutrons from deuterium–deuterium fusion
during acoustic cavitation11,12. However, there has been previously
no strong experimental evidence for the existence of a(...)
letters to nature
NATURE |VOL 434 | 3 MARCH 2005 |www.nature.com/nature 52
© 2005 Nature Publishing Group

Also die Sache ist in der offiziell umstritten, aber es gibt die Beobachtung von Bremsstrahlung.


Dazu die Referenzen im Anhang, insbesondere 11, 12:

1. Barber, B. P. & Putterman, S. J. Light scattering measurements of the repetitive supersonic implosion
of a sonoluminescing bubble. Phys. Rev. Lett. 69, 3839–3842 (1992).
2. Gompf, B., Gu¨nther, R., Nick, G., Pecha, R. & Eisenmenger, W. Resolving sonoluminescence pulse
width with time-correlated single photon counting. Phys. Rev. Lett. 79, 1405–1408 (1997).
3. Gaitan, D. F., Crum, L. A., Church, C. C. & Roy, R. A. Sonoluminescence and bubble dynamics for a
single, stable, cavitation bubble. J. Acoust. Soc. Am. 91, 3166–3183 (1992).
4. Lohse, D., Brenner, M. P., Dupont, T. F., Hilgenfeldt, S. & Johnston, B. Sonoluminescing air bubbles
rectify argon. Phys. Rev. Lett. 78, 1359–1362 (1997).
5. Brenner, M. P., Hilgenfeldt, S. & Lohse, D. Single-bubble sonoluminescence. Rev. Mod. Phys. 74,
425–484 (2002).
6. Moss, W. C., Clarke, D. B. & Young, D. A. Calculated pulse widths and spectra of a single
sonoluminescing bubble. Science 276, 1398–1401 (1997).
7. Moss, W. C. et al. Computed optical emissions from a sonoluminescing bubble. Phys. Rev. E 59,
2986–2992 (1999).
8. Burnett, P. D. S. et al. Modeling a sonoluminescing bubble as a plasma. J. Quant. Spectrosc. Radiat.
Transfer 71, 215–223 (2001).
9. Hilgenfeldt, S., Grossmann, S. & Lohse, D. A simple explanation of light emission in
sonoluminescence. Nature 398, 402–405 (1999).
10. Yasui, K. Mechanism of single-bubble sonoluminescence. Phys. Rev. E 60, 1754–1758 (1999).
11. Taleyarkhan, R. P. et al. Evidence for nuclear emissions during acoustic cavitation. Science 295,
1868–1873 (2002).
12. Taleyarkhan, R. P. et al. Additional evidence of nuclear emissions during cavitation. Phys. Rev. E 69,
036109 (2004).

back-emf aktuell zu recherchieren übersteigt grade meine Zeit-Kapazitäten. Vielleicht ein andermal.

gruß
Harald


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