{"id":22305,"date":"2015-10-12T00:55:39","date_gmt":"2015-10-11T16:55:39","guid":{"rendered":"https:\/\/case.ntu.edu.tw\/blog\/?p=22305"},"modified":"2018-08-01T16:20:38","modified_gmt":"2018-08-01T08:20:38","slug":"%e3%80%90%e4%b8%80%e9%a0%81%e7%89%a9%e7%90%86%e3%80%91%e8%b3%aa%e5%ad%90%e8%b7%9f%e5%8f%8d%e8%b3%aa%e5%ad%90%e6%98%af%e5%b0%8d%e7%a8%b1%e7%9a%84%e9%9b%99%e8%83%9e%e8%83%8e","status":"publish","type":"post","link":"https:\/\/case.ntu.edu.tw\/blog\/?p=22305","title":{"rendered":"\u8cea\u5b50\u8ddf\u53cd\u8cea\u5b50\u662f\u5c0d\u7a31\u7684\u96d9\u80de\u80ce"},"content":{"rendered":"<p><span style=\"color: #333399;\"><strong>\u25a0CERN\u7684BASE\u5be6\u9a57\u5c0d\u53cd\u8cea\u5b50\u7684\u8377\u8cea\u6bd4(charge and mass ratio)\u9032\u884c\u4e86\u7cbe\u6e96\u7684\u6e2c\u91cf\uff0c\u4e26\u8207\u8cea\u5b50\u7684\u8377\u8cea\u6bd4\u76f8\u6bd4\u8f03\u3002\u7d50\u679c\u767c\u73fe\uff0c\u9664\u4e86\u96fb\u8377\u76f8\u53cd\u5916\uff0c\u5169\u8005\u7684\u8377\u8cea\u6bd4\u76f8\u7576\u4e00\u81f4\u3002<\/strong><\/span><\/p>\n<figure id=\"attachment_22313\" aria-describedby=\"caption-attachment-22313\" style=\"width: 595px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-22313 size-full\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2015\/09\/Base.jpg\" alt=\"(Image: CERN)\" width=\"595\" height=\"340\" srcset=\"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2015\/09\/Base.jpg 595w, https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2015\/09\/Base-300x171.jpg 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" \/><figcaption id=\"caption-attachment-22313\" class=\"wp-caption-text\">BASE\u5be6\u9a57\u6240\u7528\u7684\u5be6\u9a57\u88dd\u7f6e\u793a\u610f\u5716\u3002\u9996\u5148\u63a5\u6536\u7531\u53cd\u8cea\u5b50\u6e1b\u901f\u5668(Antiproton Decelerator, AD)\u9001\u4f86\u7684\u53cd\u8cea\u5b50\uff0c\u4e26\u5132\u5b58\u5728\u5132\u5b58\u9631(Reservoir trap)\u88e1\u9762\u3002\u7576\u7528\u6e2c\u91cf\u9631(measurement trap)\u6e2c\u91cf\u53cd\u8cea\u5b50\u7684\u6642\u5019\uff0c\u53cd\u6c2b\u539f\u5b50\u5247\u662f\u5728\u4e0b\u6e38\u66ab\u5b58\u96fb\u6975(downstream park electrode)\u4e2d\u5f85\u547d\u3002\u7576\u6e2c\u91cf\u5b8c\u53cd\u8cea\u5b50\u5f8c\uff0c\u4ed6\u5011\u6703\u628a\u53cd\u8cea\u5b50\u79fb\u5230\u4e0a\u6e38\u66ab\u5b58\u96fb\u6975(upstream park electrode)\uff0c\u7136\u5f8c\u628a\u8ca0\u6c2b\u539f\u5b50\u79fb\u5230\u6e2c\u91cf\u9631\u4e2d\u6e2c\u91cf\u3002\u53cd\u8986\u6e2c\u91cf\u6578\u5343\u6b21\u5f8c\uff0c\u4fbf\u53ef\u4ee5\u5f97\u5230\u76f8\u7576\u7cbe\u6e96\u7684\u8377\u8cea\u6bd4\u3002(Image: CERN)<\/figcaption><\/figure>\n<p><strong>\u64b0\u6587\uff5c<\/strong>\u9673\u52c1\u8c6a<\/p>\n<p>\u81ea\u5f9e\u7269\u7406\u5b78\u5bb6\u8fea\u62c9\u514b\u63d0\u51fa\u53cd\u7269\u8cea\u7684\u6982\u5ff5\u5f8c\uff0c\u5f88\u5feb\u7684\u53cd\u7269\u8cea\u5c31\u5f9e\u4e00\u500b\u7269\u7406\u7684\u6982\u5ff5\u8b8a\u6210\u8fd1\u4ee3\u7269\u7406\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u7269\u7406\u4e0a\u8a8d\u70ba\u6240\u6709\u7684\u53cd\u7269\u8cea\u8ddf\u7269\u8cea\u53ea\u6709\u6240\u5e36\u7684\u96fb\u8377\u76f8\u53cd\uff0c\u5176\u4ed6\u7269\u7406\u6027\u8cea\u90fd\u4e00\u6a23\u3002\u65e5\u5e38\u751f\u6d3b\u4e2d\u6700\u5e38\u9047\u5230\u7684\u53cd\u7269\u8cea\u662f\u6b63\u5b50\uff0c\u662f\u96fb\u5b50\u7684\u53cd\u7269\u8cea\u3002\u6b63\u5b50\u5e36\u6b63\u96fb\u800c\u96fb\u5b50\u5e36\u8ca0\u96fb\u3002\u7576\u6b63\u5b50\u8ddf\u96fb\u5b50\u76f8\u9047\u7684\u6642\u5019\uff0c\u5169\u8005\u6703\u76f8\u4e92\u6e6e\u6ec5\u800c\u7522\u751f\u80fd\u91cf\u3002<\/p>\n<p>\u96fb\u5b50\u672c\u8eab\u662f\u6c92\u6709\u69cb\u9020\u7684\u7269\u8cea\uff0c\u4f46\u662f\u5177\u6709\u8907\u96dc\u7d50\u69cb\u7684\u7269\u8cea\u662f\u5426\u4e5f\u662f\u9664\u4e86\u96fb\u8377\u4e4b\u5916\uff0c\u5176\u4ed6\u7684\u7269\u7406\u6027\u8cea\u90fd\u4e00\u81f4\uff1f\u70ba\u4e86\u7814\u7a76\u9019\u500b\u554f\u984c\uff0c\u7269\u7406\u5b78\u5bb6\u6c7a\u5b9a\u7814\u7a76\u8cea\u5b50\u8ddf\u53cd\u8cea\u5b50\u7684\u96fb\u8377\u8207\u8cea\u91cf\u7684\u6bd4\u503c\u3002\u8cea\u5b50\u8ddf\u53cd\u8cea\u5b50\u5404\u5e36\u4e00\u500b\u96fb\u8377\uff0c\u53ea\u662f\u7b26\u865f\u76f8\u53cd\u3002\u7406\u8ad6\u4e0a\u9019\u5169\u8005\u7684\u8cea\u91cf\u61c9\u8a72\u4e00\u81f4\u3002\u5728\u7269\u7406\u7684\u8853\u8a9e\u4e2d\uff0c\u8868\u793a\u662f\u8cea\u5b50\u7d93\u904eCPT\u8b8a\u63db\u5f8c\u8b8a\u6210\u53cd\u8cea\u5b50\u7684\u6027\u8cea\u4e0d\u8b8a\uff0c\u6216\u7a31\u70baCPT\u5b88\u6046\u3002CPT\u5206\u5225\u4ee3\u8868\u96fb\u8377(charge)\uff0c\u5b87\u7a31(parity)\uff0c\u6642\u9593\u53cd\u6f14(time reversal)\u4e09\u500b\u5c0d\u7a31\u6027\u540c\u6642\u6539\u8b8a\u3002<!--more--><\/p>\n<p>\u6240\u4ee5\u5982\u679c\u6e2c\u91cf\u51fa\u8cea\u5b50\u8ddf\u53cd\u8cea\u5b50\u7684\u8377\u8cea\u6bd4\u4e0d\u4e00\u81f4\uff0c\u90a3\u4fbf\u6703\u76f4\u63a5\u6311\u6230\u73fe\u6709\u7684\u7269\u7406\u7406\u8ad6\u3002\u56e0\u70ba\u76ee\u524d\u7684\u7269\u7406\u7406\u8ad6\u8868\u793a\uff0c\u6240\u6709\u7269\u8cea\u90fd\u662fCPT\u5c0d\u7a31\u7684\u3002<\/p>\n<p>\u6e2c\u91cf\u8cea\u5b50\u8207\u53cd\u8cea\u5b50\u8377\u8cea\u6bd4\u7684\u5be6\u9a57\u7531\u4f4d\u65bcCERN\u7684BASE\u5be6\u9a57\u9032\u884c\u3002BASE\u5be6\u9a57\u662fBaryon Antibaryon Symmetry Experiment (\u91cd\u5b50\u53cd\u91cd\u5b50\u5c0d\u7a31\u6027\u5be6\u9a57)\u7684\u7c21\u7a31\u3002\u4ed6\u5011\u5c07\u53cd\u8cea\u5b50\u675f\u6e1b\u4f4e\u80fd\u91cf\u5f8c\u5f15\u9032\u5be6\u9a57\u5340\u57df\u5132\u5b58\uff0c\u7136\u5f8c\u4e00\u6b21\u628a\u4e00\u500b\u53cd\u8cea\u5b50\u8ddf\u4e00\u500b\u8ca0\u6c2b\u96e2\u5b50(\u5e36\u6709\u4e00\u500b\u8ca0\u96fb\u8377\u7684\u6c2b\u539f\u5b50)\u653e\u9032\u5f6d\u5be7\u9631(Penning trap)\uff0c\u7136\u5f8c\u6e2c\u91cf\u53cd\u8cea\u5b50\u8ddf\u8ca0\u6c2b\u96e2\u5b50\u7684\u8ff4\u65cb\u983b\u7387(cyclotron frequency)\u3002\u5e36\u96fb\u7c92\u5b50\u5728\u78c1\u5834\u4e2d\u7684\u8ff4\u65cb\u983b\u7387\u53ea\u8207\u5e36\u96fb\u7c92\u5b50\u7684\u96fb\u8377\uff0c\u8cea\u91cf\uff0c\u8ddf\u5916\u52a0\u78c1\u5834\u6709\u95dc\uff0c\u6240\u4ee5\u53ea\u8981\u77e5\u9053\u5916\u52a0\u78c1\u5834\u5f37\u5ea6\uff0c\u53ca\u8ff4\u65cb\u983b\u7387\uff0c\u7269\u7406\u5b78\u5bb6\u4fbf\u53ef\u4ee5\u7cbe\u6e96\u7684\u5f97\u5230\u5e36\u96fb\u7c92\u5b50\u7684\u8377\u8cea\u6bd4\u3002<\/p>\n<p>\u9078\u64c7\u8ca0\u6c2b\u96e2\u5b50\u4f86\u8ddf\u53cd\u8cea\u5b50\u6bd4\u8f03\u7684\u7406\u7531\u662f\uff0c\u8ca0\u6c2b\u96e2\u5b50\u662f\u7531\u8cea\u5b50\u52a0\u4e0a\u5169\u500b\u96fb\u5b50\u6240\u69cb\u6210\uff0c\u76f8\u7576\u65bc\u662f\u4e00\u500b\u6c2b\u539f\u5b50\u52a0\u4e0a\u4e00\u500b\u8ca0\u96fb\u8377\uff0c\u6240\u4ee5\u8cea\u91cf\u8ddf\u53cd\u8cea\u5b50\u63a5\u8fd1(\u591a\u4e86\u5169\u500b\u96fb\u5b50)\uff0c\u800c\u4e14\u96fb\u8377\u8ddf\u53cd\u8cea\u5b50\u76f8\u540c\u3002\u6240\u4ee5\u5728\u6e2c\u91cf\u8ff4\u65cb\u983b\u7387\u7684\u6642\u5019\uff0c\u53ef\u4ee5\u7528\u540c\u6a23\u7684\u96fb\u5834\u52a0\u901f\uff0c\u800c\u4e0d\u7528\u6539\u8b8a\u5100\u5668\u7684\u96fb\u5834\u65b9\u5411\u4ee5\u6e1b\u5c11\u5be6\u9a57\u8aa4\u5dee\u3002\u4e0d\u904e\u4e5f\u56e0\u6b64\uff0c\u5728\u91cf\u8377\u8cea\u6bd4\u7684\u6642\u5019\uff0c\u8981\u628a\u8ca0\u6c2b\u96e2\u5b50\u6240\u591a\u5e36\u7684\u5169\u500b\u96fb\u5b50\u7684\u8ca2\u737b\u8003\u616e\u9032\u53bb\u4e26\u79fb\u9664\u3002<\/p>\n<p>\u5be6\u9a57\u7d50\u679c\u986f\u793a\uff0c\u8cea\u5b50\u8ddf\u53cd\u8cea\u5b50\u7684\u8377\u8cea\u6bd4\u5dee\u8ddd\u70ba\u4e00\u5146\u5206\u4e4b69 (69x10^-12)\uff0c\u662f\u76ee\u524d\u5c0d\u8cea\u5b50\u8ddf\u53cd\u8cea\u5b50\u8377\u8cea\u6bd4\u6700\u7cbe\u6e96\u7684\u6e2c\u91cf\u3002\u7cbe\u6e96\u5ea6\u6bd4\u904e\u53bb\u985e\u4f3c\u7684\u5be6\u9a57\u63d0\u9ad8\u4e86\u56db\u500d\u3002\u9019\u4e5f\u518d\u6b21\u78ba\u8a8d\u4e86\u7269\u7406\u5b9a\u5f8b\u5728\u76ee\u524d\u7684\u6e2c\u91cf\u6280\u8853\u4e0b\uff0c\u4f9d\u820a\u9075\u5faa\u8457CPT\u5c0d\u7a31\u6027\u8cea\u3002<\/p>\n<p><strong>\u539f\u59cb\u8ad6\u6587<\/strong><br \/>\n<a href=\"http:\/\/www.nature.com\/nature\/journal\/v524\/n7564\/full\/nature14861.html\" target=\"_blank\" rel=\"noopener noreferrer\">High-precision comparison of the antiproton-to-proton charge-to-mass ratio<\/a><br \/>\nNature 524, 196\u2013199 (13 August 2015)<\/p>\n<p><strong>\u53c3\u8003\u8cc7\u6599<br \/>\n<\/strong>CERN Press Release 2015\/08\/12: <a href=\"http:\/\/press.web.cern.ch\/press-releases\/2015\/08\/base-experiment-cern-compares-protons-and-antiprotons-high-precision\" target=\"_blank\" rel=\"noopener noreferrer\">The BASE experiment at CERN compares protons and antiprotons with high precision<\/a><\/p>\n<p><strong style=\"color: #000000;\"><span style=\"color: #333399;\">--<br \/>\n\u4f5c\u8005\uff1a\u9673\u52c1\u8c6a\u3000\u79d1\u6559\u4e2d\u5fc3\u7279\u7d04\u5beb\u624b\uff0c\u5f9e\u4e8b\u79d1\u666e\u6587\u7ae0\u5beb\u4f5c\u30022011\u5e74\u65bc\u7f8e\u570b\u7d10\u7d04\u5dde\u7acb\u77f3\u6eaa\u5927\u5b78(SUNY\u00a0at Stony Brook)\u53d6\u5f97\u535a\u58eb\u5b78\u4f4d\uff0c\u7814\u7a76\u4e3b\u984c\u70ba\u76f8\u5c0d\u8ad6\u6027\u91cd\u96e2\u5b50\u78b0\u649e(Relativistic Heavy Ion\u00a0Collision)\u3002\u9577\u671f\u64d4\u4efb\u4e2d\u6587\u79d1\u5b78\u65b0\u805e\u7db2\u7ad9\u300c\u79d1\u666f\u300d\uff08Sciscape.org\uff09\u7e3d\u7de8\u8f2f\u3002<\/span><\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/line.me\/R\/ti\/p\/%40fcx6182w\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone\" src=\"https:\/\/scdn.line-apps.com\/n\/line_add_friends\/btn\/zh-Hant.png\" alt=\"\u52a0\u5165\u597d\u53cb\" width=\"212\" height=\"36\" border=\"0\"><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u25a0CERN\u7684BASE\u5be6\u9a57\u5c0d\u53cd\u8cea\u5b50\u7684\u8377\u8cea\u6bd4(charge and mass ratio)\u9032\u884c\u4e86\u7cbe\u6e96\u7684\u6e2c\u91cf\uff0c\u4e26\u8207\u8cea\u5b50\u7684\u8377\u8cea\u6bd4\u76f8\u6bd4\u8f03\u3002\u7d50\u679c\u767c\u73fe\uff0c\u9664\u4e86\u96fb\u8377\u76f8\u53cd\u5916\uff0c\u5169\u8005\u7684\u8377\u8cea\u6bd4\u76f8\u7576\u4e00\u81f4\u3002<\/p>\n","protected":false},"author":20,"featured_media":22313,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3293,39],"tags":[2089,2088,1577,1535],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2015\/09\/Base.jpg","_links":{"self":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/22305"}],"collection":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=22305"}],"version-history":[{"count":8,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/22305\/revisions"}],"predecessor-version":[{"id":32363,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/22305\/revisions\/32363"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/media\/22313"}],"wp:attachment":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=22305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=22305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=22305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}