{"id":209307,"date":"2024-03-21T14:07:13","date_gmt":"2024-03-21T14:07:13","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%83%8f%e3%83%b3%e3%83%ac%e5%8a%b9%e6%9e%9c%e3%81%ae%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/"},"modified":"2024-05-17T15:10:17","modified_gmt":"2024-05-17T15:10:17","slug":"%e3%83%8f%e3%83%b3%e3%83%ac%e5%8a%b9%e6%9e%9c%e3%81%ae%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e3%83%8f%e3%83%b3%e3%83%ac%e5%8a%b9%e6%9e%9c%e3%81%ae%e5%85%ac%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u30cf\u30f3\u30ec\u52b9\u679c\u306e\u516c\u5f0f | \u89e3\u8aac\u3068\u8a08\u7b97\u65b9\u6cd5"},"content":{"rendered":"<p class=\"sidekick\">\u30cf\u30f3\u30ec\u52b9\u679c\u3068\u306f\u3001\u78c1\u5834\u4e2d\u3067\u96fb\u5b50\u3084\u539f\u5b50\u306e\u30b9\u30d4\u30f3\u6319\u52d5\u3092\u89b3\u6e2c\u3059\u308b\u91cf\u5b50\u52b9\u679c\u3067\u3042\u308a\u3001\u5149\u306e\u504f\u5149\u72b6\u614b\u306b\u5bfe\u3059\u308b\u78c1\u5834\u306e\u5f71\u97ff\u304c\u91cd\u8981\u3068\u306a\u308b\u73fe\u8c61\u3067\u3059\u3002<\/p>\n<h2>\u30cf\u30f3\u30ec\u52b9\u679c\u306e\u516c\u5f0f | \u89e3\u8aac\u3068\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u7686\u3055\u3093\u3001\u3053\u3093\u306b\u3061\u306f\u3002\u672c\u65e5\u306f\u3001\u96fb\u78c1\u6c17\u5b66\u306e\u91cd\u8981\u306a\u73fe\u8c61\u3067\u3042\u308b\u30cf\u30f3\u30ec\u52b9\u679c\u306b\u3064\u3044\u3066\u89e3\u8aac\u3044\u305f\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30cf\u30f3\u30ec\u52b9\u679c\u306e\u57fa\u672c\u7684\u306a\u7406\u89e3\u3001\u516c\u5f0f\u306e\u5c0e\u51fa\u65b9\u6cd5\u3001\u305d\u3057\u3066\u5177\u4f53\u7684\u306a\u8a08\u7b97\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u7269\u7406\u5b66\u3068\u5de5\u5b66\u306e\u57fa\u790e\u3092\u5b66\u3093\u3067\u3044\u308b\u65b9\u3005\u306b\u3068\u3063\u3066\u3001\u7406\u89e3\u3092\u6df1\u3081\u308b\u52a9\u3051\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n<h2>\u30cf\u30f3\u30ec\u52b9\u679c\u3068\u306f\uff1f<\/h2>\n<p>\u30cf\u30f3\u30ec\u52b9\u679c\u3068\u306f\u3001\u78c1\u5834\u304c\u5b58\u5728\u3059\u308b\u74b0\u5883\u4e0b\u3067\u96fb\u5b50\u3084\u539f\u5b50\u306e\u30b9\u30d4\u30f3\u3092\u89b3\u6e2c\u3059\u308b\u969b\u306b\u73fe\u308c\u308b\u91cf\u5b50\u52b9\u679c\u3067\u3059\u3002\u7279\u306b\u3001\u539f\u5b50\u304c\u767a\u3059\u308b\u5149\u306e\u504f\u5149\u72b6\u614b\u306b\u78c1\u5834\u304c\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u73fe\u8c61\u3068\u3057\u3066\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f1924\u5e74\u306b\u30c9\u30a4\u30c4\u306e\u7269\u7406\u5b66\u8005\u30f4\u30a7\u30eb\u30ca\u30fc\u30fb\u30cf\u30a4\u30f3\u30ea\u30c3\u30d2\u30fb\u30cf\u30f3\u30ec\u306b\u3088\u3063\u3066\u767a\u898b\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h2>\u30cf\u30f3\u30ec\u52b9\u679c\u306e\u7406\u8ad6<\/h2>\n<p>\u30cf\u30f3\u30ec\u52b9\u679c\u306f\u30b9\u30d4\u30f3\u7de9\u548c\u6642\u9593\uff08\\(\\tau_s\\)\uff09\u3068\u30e9\u30fc\u30e2\u30a2\u5468\u6ce2\u6570\uff08\\(\\omega_L\\)\uff09\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u30e9\u30fc\u30e2\u30a2\u5468\u6ce2\u6570\u306f\u78c1\u5834\u306e\u5f37\u3055\uff08\\(B\\)\uff09\u306b\u6bd4\u4f8b\u3057\u3001\u78c1\u5834\u4e2d\u3067\u306e\u30b9\u30d4\u30f3\u306e\u6b73\u5dee\u904b\u52d5\u3092\u8868\u3057\u307e\u3059\u3002\u30cf\u30f3\u30ec\u52b9\u679c\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u516c\u5f0f\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n<p>\n\\[<br \/>\nI(B) \\propto \\frac{1}{1 + (\\omega_L \\tau_s)^2}<br \/>\n\\]\n<\/p>\n<h2>\u516c\u5f0f\u306e\u8a73\u7d30\u306a\u89e3\u8aac<\/h2>\n<p>\u3053\u3053\u3067\u3001<b>\\(I(B)\\)<\/b>\u306f\u78c1\u5834<strong>\\(B\\)<\/strong>\u306e\u3082\u3068\u3067\u89b3\u6e2c\u3055\u308c\u308b\u5149\u306e\u5f37\u5ea6\u3067\u3059\u3002\u3053\u306e\u5f0f\u304c\u793a\u3059\u306e\u306f\u3001\u78c1\u5834\u304c\u30bc\u30ed\u306e\u3068\u304d\u6700\u5927\u5024\u3092\u6301\u3061\u3001\u78c1\u5834\u304c\u5f37\u304f\u306a\u308b\u306b\u3064\u308c\u3066\u5149\u306e\u5f37\u5ea6\u304c\u6e1b\u5c11\u3059\u308b\u3068\u3044\u3046\u73fe\u8c61\u3067\u3059\u3002\u5f0f\u306e\u4e2d\u306e\u30e9\u30fc\u30e2\u30a2\u5468\u6ce2\u6570<strong>\\(\\omega_L\\)<\/strong>\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>\n\\[<br \/>\n\\omega_L = \\gamma B<br \/>\n\\]\n<\/p>\n<p>\u3053\u3053\u3067\u3001<b>\\(\\gamma\\)<\/b>\u306f\u96fb\u5b50\u306e\u30b8\u30e3\u30a4\u30ed\u78c1\u6c17\u6bd4\u3067\u3059\u3002\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30c8\u4ed8\u304d\u306e\u6587\u5b57\u305f\u3061\u306f\u7269\u7406\u5b9a\u6570\u3084\u305d\u308c\u306b\u985e\u3059\u308b\u5024\u3092\u8868\u3057\u3066\u304a\u308a\u3001\u5177\u4f53\u7684\u306b\u306f\u96fb\u5b50\u306e\u6027\u8cea\u3084\u78c1\u5834\u306e\u7279\u5fb4\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u5177\u4f53\u4f8b\u3068\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u305d\u308c\u3067\u306f\u3001\u5177\u4f53\u7684\u306a\u4f8b\u3068\u8a08\u7b97\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u78c1\u5834<strong>\\(B\\)<\/strong> = 1 \u30c6\u30b9\u30e9\u3067\u3001\u30b9\u30d4\u30f3\u7de9\u548c\u6642\u9593<strong>\\(\\tau_s\\)<\/strong> \u304c10\u30ca\u30ce\u79d2\uff08\\(10^{-9}\\) \u79d2\uff09\u3067\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u3001\u96fb\u5b50\u306e\u30b8\u30e3\u30a4\u30ed\u78c1\u6c17\u6bd4<strong>\\(\\gamma\\)<\/strong>\u306f\u7d04 \\(2.8 \\times 10^{10}\\) T<sup>-1<\/sup>s<sup>-1<\/sup>\u3067\u3059\u3002\u30e9\u30fc\u30e2\u30a2\u5468\u6ce2\u6570\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n<p>\n\\[<br \/>\n\\omega_L = \\gamma B = 2.8 \\times 10^{10} \\times 1 = 2.8 \\times 10^{10} \\text{ s}^{-1}<br \/>\n\\]\n<\/p>\n<p>\u6b21\u306b\u3001\u30b9\u30d4\u30f3\u7de9\u548c\u6642\u9593\u3068\u30e9\u30fc\u30e2\u30a2\u5468\u6ce2\u6570\u3092\u516c\u5f0f\u306b\u4ee3\u5165\u3057\u307e\u3059\uff1a<\/p>\n<p>\n\\[<br \/>\n(\\omega_L \\tau_s)^2 = (2.8 \\times 10^{10} \\times 10^{-8})^2 = (2.8 \\times 10^2)^2 = 784<br \/>\n\\]\n<\/p>\n<p>\u3053\u308c\u3092\u5143\u306e\u516c\u5f0f\u306b\u9069\u7528\u3057\u307e\u3059\uff1a<\/p>\n<p>\n\\[<br \/>\nI(B) \\propto \\frac{1}{1 + 784} = \\frac{1}{785}<br \/>\n\\]\n<\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u30cf\u30f3\u30ec\u52b9\u679c\u306e\u5149\u5f37\u5ea6<strong>\\(I(B)\\)<\/strong>\u304c\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u5149\u5f37\u5ea6\u5024\u306f\u6bd4\u4f8b\u5b9a\u6570\u306b\u3088\u308a\u6c7a\u307e\u308a\u307e\u3059\u304c\u3001\u3053\u306e\u4f8b\u3067\u306f\u76f8\u5bfe\u7684\u306a\u6e1b\u5c11\u304c\u7406\u89e3\u3067\u304d\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u30cf\u30f3\u30ec\u52b9\u679c\u306f\u91cf\u5b50\u529b\u5b66\u3068\u96fb\u78c1\u6c17\u5b66\u304c\u4ea4\u5dee\u3059\u308b\u975e\u5e38\u306b\u8208\u5473\u6df1\u3044\u73fe\u8c61\u3067\u3042\u308a\u3001\u78c1\u5834\u4e2d\u3067\u306e\u30b9\u30d4\u30f3\u6319\u52d5\u3092\u89b3\u6e2c\u3059\u308b\u305f\u3081\u306e\u6709\u529b\u306a\u624b\u6cd5\u3067\u3059\u3002\u4eca\u56de\u306e\u89e3\u8aac\u3068\u8a08\u7b97\u4f8b\u304c\u3001\u7686\u3055\u3093\u306e\u7406\u89e3\u306b\u5f79\u7acb\u3064\u3053\u3068\u3092\u9858\u3063\u3066\u3044\u307e\u3059\u3002\u7269\u7406\u5b66\u306e\u57fa\u672c\u539f\u7406\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u5c06\u6765\u306e\u5de5\u5b66\u3084\u6280\u8853\u9769\u65b0\u306b\u7e4b\u304c\u308b\u91cd\u8981\u306a\u30b9\u30c6\u30c3\u30d7\u3067\u3059\u3002\u3053\u308c\u304b\u3089\u3082\u63a2\u7a76\u5fc3\u3092\u6301\u3063\u3066\u5b66\u3073\u7d9a\u3051\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30cf\u30f3\u30ec\u52b9\u679c\u3068\u306f\u3001\u78c1\u5834\u4e2d\u3067\u96fb\u5b50\u3084\u539f\u5b50\u306e\u30b9\u30d4\u30f3\u6319\u52d5\u3092\u89b3\u6e2c\u3059\u308b\u91cf\u5b50\u52b9\u679c\u3067\u3042\u308a\u3001\u5149\u306e\u504f\u5149\u72b6\u614b\u306b\u5bfe\u3059\u308b\u78c1\u5834\u306e\u5f71\u97ff\u304c\u91cd\u8981\u3068\u306a\u308b\u73fe\u8c61\u3067\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[96],"tags":[97],"class_list":["post-209307","post","type-post","status-publish","format-standard","hentry","category-96","tag-97","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- 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