{"id":74520,"date":"2016-11-19T07:12:12","date_gmt":"2016-11-18T23:12:12","guid":{"rendered":"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/?p=74520"},"modified":"2021-10-06T16:03:44","modified_gmt":"2021-10-06T08:03:44","slug":"%e9%9b%bb%e5%ad%90%e6%ad%a3%e5%ad%90%e5%b0%8d%e6%bb%85","status":"publish","type":"post","link":"http:\/\/localhost\/%e9%9b%bb%e5%ad%90%e6%ad%a3%e5%ad%90%e5%b0%8d%e6%bb%85\/","title":{"rendered":"\u96fb\u5b50\u6b63\u5b50\u5c0d\u6ec5"},"content":{"rendered":"

\u96fb\u5b50\u6b63\u5b50\u5c0d\u6ec5 (Electron-Positron Annihilation)<\/strong><\/span>
\n\u570b\u7acb\u81fa\u7063\u5927\u5b78\u7269\u7406\u5b78\u7cfb \u9673\u6631\u749f<\/strong><\/span><\/p>\n

\u96fb\u5b50\u6b63\u5b50\u5c0d\u6ec5 (Electron-positron annihilation) \u662f\u6307\u7576\u96fb\u5b50\u8207\u6b63\u5b50\uff08\u96fb\u5b50\u7684\u53cd\u7c92\u5b50\uff09\u76f8\u649e\u6642\uff0c\u4e92\u76f8\u6d88\u6ec5\u7684\u904e\u7a0b\u3002\u6b63\u5b50\u662f\u8207\u96fb\u5b50\u76f8\u5c0d\u7684\u53cd\u7269\u8cea\uff0c\u5e36\u6709 +1 \u7684\u55ae\u4f4d\u96fb\u8377\uff0c\u8cea\u91cf\u8207\u96fb\u5b50\u7686\u76f8\u540c\u3002\u96d6\u7136\u5169\u8005\u76f8\u4e92\u6d88\u6ec5\uff0c\u4f46\u6b64\u904e\u7a0b\u5fc5\u9808\u6eff\u8db3\u96fb\u8377\u5b88\u8861\u5b9a\u5f8b\u3001\u52d5\u91cf\u5b88\u8861\u5b9a\u5f8b\u3001\u80fd\u91cf\u5b88\u8861\u5b9a\u5f8b\u4ee5\u53ca\u89d2\u52d5\u91cf\u5b88\u6046\u5b9a\u5f8b\uff1b\u904e\u7a0b\u4e2d\u6709\u4e00\u5b9a\u7684\u6a5f\u7387\u7522\u751f\u5149\u5b50 (Photon)\u3001\u6216\u662f\u5176\u4ed6\u66f4\u9ad8\u80fd\u91cf\u7684\u7c92\u5b50\u5c0d\uff0c\u4f46\u662f\u6a5f\u7387\u8f03\u5c0f\u3002\u96d6\u7136\u5982\u6b64\uff0c\u96fb\u5b50\u8207\u6b63\u5b50\u4e5f\u6709\u6a5f\u7387\u5f7c\u6b64\u5f71\u97ff\u800c\u4e0d\u5c0d\u6ec5\uff0c\u4f8b\u5982\uff1a\u5f48\u6027\u6563\u5c04 (Elastic scattering) \u4e2d\uff0c\u5169\u500b\u7c92\u5b50\u4ea4\u63db\u90e8\u5206\u52d5\u91cf\u53ca\u80fd\u91cf\uff0c\u4f46\u4e26\u6c92\u6709\u5c0d\u6ec5\u3002<\/p>\n

\"74520_p1\"<\/a>

\u5716\u4e00\u3001\u96fb\u5b50\u6b63\u5b50\u5c0d\u6ec5\u7522\u751f\u5149\u5b50\u4e4b\u8cbb\u66fc\u5716\u3002\uff08\u672c\u6587\u4f5c\u8005\u9673\u6631\u749f\u7e6a\uff09<\/p><\/div>\n

\u7576\u5165\u5c04\u7684\u96fb\u5b50\u8207\u6b63\u5b50\u80fd\u91cf\u8f03\u4f4e\u6642\uff0c\u7522\u751f\u5169\u500b\u6216\u591a\u500b\u5149\u5b50\u7684\u6a5f\u7387\u6700\u5927\uff0c\u7531\u65bc\u52d5\u91cf\u5b88\u6046\u5b9a\u5f8b\uff0c\u4e0d\u80fd\u5141\u8a31\u7522\u751f\u55ae\u4e00\u500b\u5149\u5b50\u3002\u5716\u4e00\u5373\u70ba\u96fb\u5b50\u8207\u6b63\u5b50\u5c0d\u6ec5\u7522\u751f\u5169\u500b\u5149\u5b50\u7684\u8cbb\u66fc\u5716 (Feynman diagram)\uff0c\u7531\u4e0b\u81f3\u4e0a\u4ee3\u8868\u6642\u9593\u7684\u5148\u5f8c\uff0c\u7bad\u982d\u4ee3\u8868\u7269\u8cea\u53ca\u53cd\u7269\u8cea\uff0c\u6ce2\u6d6a\u7dda\u4ee3\u8868\u5149\u5b50\u3002\u800c\u5176\u65b9\u7a0b\u5f0f\u5982\u4e0b\uff1a<\/p>\n

$$e^-+e^+\\rightarrow \\gamma+\\gamma$$<\/p>\n

\u7576\u80fd\u91cf\u8f03\u9ad8\u6642\uff0c\u6709\u53ef\u80fd\u7522\u751f\u8f03\u91cd\u7684\u7c92\u5b50\u5c0d\uff0c\u4f8b\u5982\uff1aD \u4ecb\u5b50 (D meson)\u3001W \u53ca Z \u73bb\u8272\u5b50 (W and Z boson) \u7b49\u7b49\u3002\u8a31\u591a\u7c92\u5b50\u52a0\u901f\u5668\u5373\u662f\u5229\u7528\u6b63\u5b50\u8207\u96fb\u5b50\u5728\u76f8\u5c0d\u8ad6\u6027\u901f\u5ea6\u4e0b\u5c0d\u649e\u80fd\u5920\u7522\u751f\u5404\u7a2e\u7684\u6b21\u539f\u5b50\u7c92\u5b50 (Subatomic particle) \u4f86\u9032\u884c\u5be6\u9a57\uff0c\u901a\u904e\u7814\u7a76\u9019\u4e9b\u78b0\u649e\u7684\u6578\u64da\uff0c\u9ad8\u80fd\u7269\u7406\u5b78\u5bb6\u5f97\u4ee5\u6e2c\u8a66\u65b0\u7406\u8ad6\u4ee5\u53ca\u5c0b\u627e\u65b0\u7c92\u5b50\u3002\u4f4d\u65bc\u745e\u58eb\u53ca\u6cd5\u570b\u908a\u754c\u7684\u5927\u578b\u96fb\u5b50\u6b63\u5b50\u5c0d\u649e\u6a5f\uff08Large Electron-Positron Collider\uff0c\u7e2e\u5beb\uff1aLEP\uff09\uff0c\u662f\u76ee\u524d\u5df2\u5efa\u9020\u6700\u9ad8\u80fd\u91cf\u7684\u8f15\u5b50\u52a0\u901f\u5668\uff0c\u4f46\u5728 2001 \u5e74\u5df2\u88ab\u62c6\u9664\uff0c\u5176\u7a7a\u9593\u88ab\u62ff\u4f86\u4f5c\u70ba\u5927\u578b\u5f37\u5b50\u5c0d\u649e\u6a5f\uff08Large Hadron Collider\uff0c\u7e2e\u5beb\uff1aLHC\uff09\u4e4b\u8ecc\u9053\u3002<\/p>\n

\u96fb\u5b50\u6b63\u5b50\u5c0d\u6ec5\u5728\u91ab\u7642\u53ca\u79d1\u5b78\u4e2d\u7684\u61c9\u7528\u5f88\u5ee3\uff0c\u6b63[\u96fb]\u5b50[\u767c\u5c04]\u5c64\u6790\u8853 (Positron emission tomography) \u5373\u662f\u91ab\u7642\u61c9\u7528\u7684\u5176\u4e2d\u4e00\u4f8b\u3002\u85c9\u7531\u6e2c\u8a66\u8005\u559d\u4e0b\u53bb\u7684\u653e\u5c04\u6027\u5143\u7d20\u6240\u8870\u8b8a\u91cb\u653e\u51fa\u7684\u6b63\u5b50\uff0c\u8207\u4eba\u9ad4\u5167\u90e8\u7684\u96fb\u5b50\u76f8\u4e92\u5c0d\u6ec5\uff0c\u91cb\u653e\u51fa\u4e00\u5c0d\u5f7c\u6b64\u65b9\u5411\u76f8\u53cd\u7684\u5149\u5b50\u5c0d\uff0c\u800c\u4eba\u9ad4\u5916\u5074\u7684\u5075\u6e2c\u5668\u5728\u63a5\u53d7\u5230\u540c\u6642\u51fa\u73fe\u7684\u5149\u8a0a\u865f\u5f8c\uff0c\u8a08\u7b97\u4e26\u91cd\u5efa\u4f4d\u7f6e\uff0c\u5373\u53ef\u63d0\u4f9b\u4eba\u9ad4\u5168\u8eab\u7684\u4e09\u7dad\u5716\u50cf\uff0c\u662f\u76ee\u524d\u6838\u91ab\u5b78\u9818\u57df\u6975\u5148\u9032\u7684\u81e8\u5e8a\u6aa2\u67e5\u5f71\u50cf\u6280\u8853\u3002\u800c\u5728\u6750\u6599\u79d1\u5b78\u4e2d\uff0c\u6b63\u5b50\u6e6e\u6ec5\u80fd\u8b5c\uff08Positron Annihilation Spectroscopy\uff0c\u7e2e\u5beb\uff1a PAS\uff09\u662f\u4e00\u7a2e\u975e\u7834\u58de\u6027\u7684\u7814\u7a76\u65b9\u6cd5\uff0c\u85c9\u7531\u6b63\u5b50\u4f86\u5075\u6e2c\u56fa\u614b\u6750\u6599\u4e2d\u5fae\u89c0\u7684\u7d50\u69cb\uff0c\u6676\u683c\u7f3a\u9677\u7b49\u7b49\u3002<\/p>\n

\n

\u53c3\u8003\u6587\u737b<\/strong><\/p>\n

    \n
  1. \u5f35\u5143\u7ff0 (2005)\u3002\u5f9e\u79d1\u5e7b\u4e16\u754c\u5230\u79d1\u5b78\u7814\u7a76\u2500\u5c0b\u627e\u53cd\u7269\u8cea\u3002\u79d1\u5b78\u4eba\u96dc\u8a8c\uff0c\u7b2c41\u671f7\u6708\u865f\u3002<\/li>\n
  2. \u7dad\u57fa\u767e\u79d1\uff5c\u96fb\u5b50\u5c0d\u6e6e\u6ec5\u3002http:\/\/zh.wikipedia.org\/wiki\/%E9%9B%BB%E5%AD%90%E5%B0%8D%E6%B9%AE%E6%BB%85<\/li>\n
  3. \u7dad\u57fa\u767e\u79d1\uff5c\u6b63\u96fb\u5b50\u3002
    \nhttp:\/\/zh.wikipedia.org\/wiki\/%E6%AD%A3%E9%9B%BB%E5%AD%90<\/li>\n<\/ol>\n<\/div>","protected":false},"excerpt":{"rendered":"

    \u96fb\u5b50\u6b63\u5b50\u5c0d\u6ec5 (Electron-Positron Annihilation) \u570b\u7acb\u81fa\u7063\u5927\u5b78\u7269\u7406\u5b78\u7cfb \u9673\u6631\u749f …<\/p>\n","protected":false},"author":50,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,107,32],"tags":[4489,572,10904,10902,10903,2742],"class_list":["post-74520","post","type-post","status-publish","format-standard","hentry","category-physics07-01","category-physics00","category-physics07","tag-annihilation","tag-electron","tag-positron","tag-10902","tag-10903","tag-2742","loop-entry","cat-33","cat-107","cat-32","no-thumbnail"],"views":4945,"_links":{"self":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/74520","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/comments?post=74520"}],"version-history":[{"count":1,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/74520\/revisions"}],"predecessor-version":[{"id":85914,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/74520\/revisions\/85914"}],"wp:attachment":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/media?parent=74520"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/categories?post=74520"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/tags?post=74520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}