Rambler's Top100Astronet    
  po tekstam   po klyuchevym slovam   v glossarii   po saitam   perevod   po katalogu
 
Na saite
Astrometriya
Astronomicheskie instrumenty
Astronomicheskoe obrazovanie
Astrofizika
Istoriya astronomii
Kosmonavtika, issledovanie kosmosa
Lyubitel'skaya astronomiya
Planety i Solnechnaya sistema
Solnce

Komptonovskaya dlina volny

- velichina razmernosti dliny, harakternaya dlya relyativistskih kvantovyh processov; vyrazhaetsya cherez massu m chasticy i universal'nye postoyannye h i c: $\lambda_C=h/mc$. Dlya elektrona $\lambda_C=2,4263\cdot 10^{-10}$ sm, dlya protona $\lambda_C=1,3214\cdot 10^{-13}$ sm. K. d. v. nazyvayut takzhe velichinu ${\bar \lambda}_C=\lambda_C/2\pi$. Nazvanie K. d. v. svyazano s tem, chto velichina $\lambda_C$ opredelyaet uvelichenie dliny volny el.-magn. izlucheniya pri komptonovskom rasseyanii na pokoyasheisya chastice.

K. d. v. opredelyaet masshtab prostranstv. neodnorodnostei polei, pri k-ryh stanovyatsya sushestvennymi kvantovye relyativistskie processy. Napr., v sluchae el.-magn. polya s neodnorodnostyami men'she K. d. v. elektrona, energiya fotonov $\varepsilon=h\nu (\nu=c/\lambda$ - chastota fotonov) okazyvaetsya bol'she energii pokoya elektrona mec2 i, sledovatel'no, v etom pole stanovitsya vozmozhnym rozhdenie elektron-pozitronnyh par.

K. d. v. opredelyaet takzhe rasstoyanie, na k-roe mozhet udalit'sya virtual'naya chastica s massoi m ot tochki svoego rozhdeniya. Poetomu radius deistviya yadernyh sil (perenoschikom k-ryh yavl. v osnovnom virtual'nye $\pi$-mezony - samye legkie iz sil'no vzaimodeistvuyushih chastic) po poryadku velichiny raven K. d. v. $\pi$-mezona (~ 10-13 sm).

(V.I. Grigor'ev)


Glossarii Astronet.ru


A | B | V | G | D | Z | I | K | L | M | N | O | P | R | S | T | U | F | H | C | Ch | Sh | E | Ya 
Karta smyslovyh svyazei dlya termina KOMPTONOVSKAYa DLINA VOLNY

Ocenka: 2.9 [golosov: 105]
 
O reitinge
Versiya dlya pechati Raspechatat'

Astronet | Nauchnaya set' | GAISh MGU | Poisk po MGU | O proekte | Avtoram

Kommentarii, voprosy? Pishite: info@astronet.ru ili syuda

Rambler's Top100 Yandeks citirovaniya