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Ilmu Alam => Fisika => Topik dimulai oleh: Karno Giyantono pada September 05, 2009, 01:21:40 PM

Judul: magnetic monopole
Ditulis oleh: Karno Giyantono pada September 05, 2009, 01:21:40 PM
 Magnetic monopole: apakah akhirnya ditemukan ?
Friday, 4 September, 2009 19:43
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"haryo_hep" <[email protected]>
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Baru membaca di Science (via Symmetry Magazine) bahwa sekelompok fisikawan di Helmholtz-Zentrum Berlin für Materialien und Energie mengumumkan bahwa mereka telah mengamati keberadaan magnetic monopole.

http://www.scienced aily.com/ releases/ 2009/09/09090316 3725.htm
http://physicsworld .com/cws/ article/news/ 40302 (Physics World)
http://www.nature. com/news/ 2009/090903/ full/news. 2009.881. html (Nature)
http://arxiv. org/abs/0908. 3568v2

Detailnya cukup banyak dan belum saya baca semua, kalau ada yang sudah sempat membaca dan bisa menjelaskan, terima kasih banyak.

Haryo
Judul: Re: magnetic monopole
Ditulis oleh: ksatriabajuhitam pada September 05, 2009, 10:22:10 PM
wew, magnetic monopole, bahasan tingkat tinggi nih :P
nyimak dulu deh :kribo:

nih ada cuplikan lain dari tante wiki (lumayan update juga ternyata nih tante :P )
Kutip
In a paper published in Science in September 2009, researchers Jonathan Morris and Alan Tennant from the Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) along with colleages from Dresden University of Technology, St. Andrews, La Plata, and Oxford University describe the observation of quasiparticles resembling monopoles. A single crystal of dysprosium titanate in a highly frustrated pyrochlore lattice (F d -3 m) was cooled to 0.6 to 2 K. Using neutron scattering, the magnetic moments were shown to align in the spin ice into interwoven tube-like bundles resembling a Dirac strings. At the defect formed by the end of each tube, the magnetic field looks like that of a monopole. Using an applied magnetic field to break the symmetry of the system, the researchers were able to control the density and orientation of these strings. A contribution to the heat capacity of the system from an effective gas of these quasiparticles is also described.[19][20]
[19] http://www.sciencedaily.com/releases/2009/09/090903163725.htm
[20] http://dx.doi.org/10.1126/science.1178868
katanya sih baru monopole quasiparticle, bukan monopole particle.