Mathematical and Physical Journal
for High Schools
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Problem P. 3893. (April 2006)

P. 3893. The electron of a hydrogen atom can be replaced by a muon for a short time. The new atom is called muonium. (The muon is similar to the electron but its mass is 207 times greater than the mass of the electron, and its decay time is very short. Find the radius of the muonium in its ground state. How much energy is needed to ionize the muonium atom? Data: The radius of the hydrogen atom is about 0.05 nm, and its ionization energy is 2.2 aJ.

(4 pont)

Deadline expired on May 11, 2006.


Statistics:

40 students sent a solution.
4 points:Almási 270 Gábor András, Berta Katalin, Blastik Zsófia, Blázsik Zoltán, Csire Gábor, Demeter Dániel, Dudás János, Englert Dávid, Farkas 512 Patrik, Filep Tibor, Hegyi Ádám, Hlatky Dávid, Kocsis Vilmos, Kónya 495 Gábor, Legoza József, Lovas Lia Izabella, Mándi Gábor, Matulik Gábor, Megyeri Balázs, Molnár 811 Kristóf, Nagy 317 Péter, Nagy 555 Zoltán, Nagy 897 Zsolt, Pálovics Róbert, Pásztor Attila, Pósa László, Rárósi Dávid, Sajtos László, Sebők Tamás, Szaller Dávid, Széchenyi Gábor, Szük Dániel, Takátsy Balázs, Tolner Ferenc, Tóth 123 László, Varga Bonbien, Werner Miklós.
3 points:Dombi András, Takács 484 Marcell.
2 points:1 student.

Problems in Physics of KöMaL, April 2006