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Mengesha\u3001T.D. Taulbee\u3001B .D. Rooney \u548c J.D. Valentine.CsI<\/a><\/em>\uff08Tl\uff09\u3001CsI\uff08Na\uff09 \u548c YAP \u7684\u5149\u4ea7\u989d\u975e\u6bd4\u4f8b\u6027IEEE Trans. Nucl. Sci. \u7b2c 45 \u5377\uff0c\u7b2c 3 \u671f\uff0c<\/em> .<\/p>\n \u95ea\u70c1\u4f53\u6bd4\u4f8b\u662f\u4e00\u4e2a\u6750\u6599\u5e38\u6570\uff0c\u6bcf\u79cd\u6750\u6599\u90fd\u4e0d\u540c<\/p>\n \u56e0\u6b64\uff0c\u95ea\u70c1\u4f53\u7684\u80fd\u91cf\u5206\u8fa8\u7387\u53ef\u4ee5\u7528\u4ee5\u4e0b\u516c\u5f0f\u6765\u63cf\u8ff0\uff1a<\/p>\n \u9879 1 \u662f\u76f8\u79f0\u6027;\u7b2c 2 \u9879 \u7edf\u8ba1\u7684\u8d21\u732e\uff08\u6bcf\u6b21\u76f8\u4e92\u4f5c\u7528\u4ea7\u751f\u7684\u5149\u91cf\uff09\u548c\u7b2c 3 \u9879 PMT \u6216\u95ea\u70c1\u4f53\u7b49\u4e0d\u5747\u5300\u6027\u6548\u5e94\u3002<\/p>\n \u95ea\u70c1\u63a2\u6d4b\u5668\u7684\u80fd\u91cf\u5206\u8fa8\u7387\u662f\u771f\u6b63\u7684\u63a2\u6d4b\u5668\u7279\u6027<\/strong>\uff0c\u53d7\u95ea\u70c1\u4f53\u548c PMT \u6216\u5176\u4ed6\u8bfb\u51fa\u8bbe\u5907\u7684\u7269\u7406\u7279\u6027\u7684\u9650\u5236\u3002<\/p>\n \u5c0f\u578b NaI<\/a>\uff08Tl\uff09 \u63a2\u6d4b\u5668\u5438\u6536\u7684 662 keV \u03b3 \u5c04\u7ebf\u7684\u5178\u578b\u80fd\u91cf\u5206\u8fa8\u7387\u4e3a 7.0 % FWHM\u3002\u5728\u4f4e\u80fd\u91cf\u4e0b\uff0c\u4f8b\u5982 5.9 keV\uff0c\u5178\u578b\u503c\u4e3a 40 % FWHM\u3002\u5728\u8fd9\u4e9b\u4f4e\u80fd\u91cf\u4e0b\uff0c\u95ea\u70c1\u6676\u4f53\u7684\u8868\u9762\u5904\u7406\u4f1a\u5f3a\u70c8\u5f71\u54cd\u5206\u8fa8\u7387\u3002\u5f88\u660e\u663e\uff0c\u7279\u522b\u662f\u5728\u4f4e\u80fd\u91cf\u4e0b\uff0c\u95ea\u70c1\u63a2\u6d4b\u5668\u662f\u4f4e\u5206\u8fa8\u7387\u5668\u4ef6\uff0c\u8fd9\u4e0e Si\uff08Li\uff09 \u6216 HPGe \u63a2\u6d4b\u5668\u4e0d\u540c\u3002<\/p>\n \u4f7f\u7528\u6bd4\u4f8b\u66f4\u9ad8\u7684\u6676\u4f53\uff0c\u4f8b\u5982 LaBr3\uff1aCe\u3001LBC\u3001CeBr3 \u6216 SrI2\uff08Eu\uff09\uff0c\u53ef\u4ee5\u5728 662 keV \u4f3d\u9a6c\u5c04\u7ebf\u4e0b\u5b9e\u73b0\u4f4e\u81f3 3-4% \u6c34\u5e73\u7684\u80fd\u91cf\u5206\u8fa8\u7387\u6570\u3002\u5728\u9ad8\u5206\u8fa8\u7387\u6676\u4f53\u90e8\u5206\u4e2d\uff0c\u63d0\u4f9b\u4e86\u6709\u5173\u6bd4\u4f8b\u95ea\u70c1\u6676\u4f53\u7684\u66f4\u591a\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n c. \u65f6\u95f4\u5206\u8fa8\u7387<\/strong><\/p>\n \u95ea\u70c1\u63a2\u6d4b\u5668\u7684\u65f6\u95f4\u5206\u8fa8\u7387\u53cd\u6620\u4e86\u51c6\u786e\u5b9a\u4e49\u63a2\u6d4b\u5668\u4e2d\u8f90\u5c04\u91cf\u5b50\u5438\u6536\u77e9\u7684\u80fd\u529b\u3002<\/p>\n \u95ea\u70c1\u4f53\u7684\u5149\u8109\u51b2\u4ee5\u4e0a\u5347\u65f6\u95f4\u548c 1\/e \u4e0b\u964d\u65f6\u95f4 \u03c4\uff08\u8870\u51cf\u65f6\u95f4\u53c2\u89c1\u95ea\u70c1\u7279\u6027<\/a>\u90e8\u5206\uff09\u4e3a\u7279\u5f81 \u5f88\u660e\u663e\uff0c\u5f53\u95ea\u70c1\u8109\u51b2\u8f83\u77ed\uff08\u8870\u51cf\u65f6\u95f4\u77ed\uff09\u4e14\u5f3a\u5ea6\u8f83\u9ad8\u65f6\uff0c\u53ef\u4ee5\u83b7\u5f97\u5438\u6536\u4e8b\u4ef6\u7684\u6700\u4f73\u65f6\u95f4\u5b9a\u4e49\u3002\u6b64\u5916\uff0cPMT \u548c\u7535\u5b50\u8bbe\u5907\u7684\u4e0a\u5347\u65f6\u95f4\u548c\u65f6\u95f4\u6296\u52a8\uff08\u4e5f\u79f0\u4e3a\u4f20\u8f93\u65f6\u95f4\u6269\u5c55\uff0cTTS\uff09\u4e5f\u5f88\u91cd\u8981\u3002\u5bf9\u4e8e\u534a\u5bfc\u4f53\u8bfb\u51fa\uff0c\u7c7b\u4f3c\u7684\u7279\u6027\u4e5f\u9002\u7528\u3002<\/p>\n \u5c0f\u5398\u7c73\u5c3a\u5bf8 NaI\uff08Tl\uff09 \u63a2\u6d4b\u5668\u5bf9 60Co \uff081.2 MeV\uff09 \u7684\u5178\u578b\u65f6\u95f4\u5206\u8fa8\u7387\u4e3a\u51e0\u7eb3\u79d2\u3002\u4f7f\u7528\u6709\u673a\u6216\u00a0BaF2<\/strong>\u00a0\u95ea\u70c1\u6676\u4f53\u53ef\u4ee5\u83b7\u5f97\u66f4\u597d\u7684\u65f6\u95f4\u5206\u8fa8\u7387\u3002BaF2 \u662f\u76ee\u524d\u5df2\u77e5\u6700\u5feb\u7684\u65e0\u673a\u95ea\u70c1\u4f53\uff0c\u63a2\u6d4b\u5668\u65f6\u95f4\u5206\u8fa8\u7387\u4e3a\u51e0\u767e\u76ae\u79d2\u3002\u6b64\u5916\uff0c\u6eb4\u5316\u94c8 \uff08CeBr3\uff09 \u95ea\u70c1\u4f53\u53ef\u5b9e\u73b0\u76f8\u5f53\u7684\u65f6\u95f4\u5206\u8fa8\u7387\u3002<\/p>\n d. \u5cf0\u8c37\u6bd4<\/strong><\/p>\n \u68c0\u67e5\u95ea\u70c1\u63a2\u6d4b\u5668\u80fd\u91cf\u5206\u8fa8\u7387\u7684\u4e00\u79cd\u7075\u654f\u65b9\u6cd5\u662f\u5728\u80fd\u8c31\u4e2d\u5b9a\u4e49\u6240\u8c13\u7684\u5cf0\u8c37 \uff08P\/V\uff09\u3002\u6b64\u6807\u51c6\u4e0d\u53d6\u51b3\u4e8e\u4fe1\u53f7\u4e2d\u4efb\u4f55\u53ef\u80fd\u7684\u504f\u79fb\u91cf\u3002\u53d6\u4e24\u4e2a Gamma \u5cf0\u4e4b\u95f4\u7684\u5cf0\u8c37\uff0c\u6216\u8005\u53d6\u4f4e\u80fd\u91cf\u5cf0\u4e0e PMT\/\u7535\u5b50\u566a\u58f0\u4e4b\u95f4\u7684\u6bd4\u7387\u3002<\/p>\n 76 x 76 mm NaI\uff08Tl\uff09 \u6676\u4f53\u7684\u826f\u597d P\/V \u6bd4\u4e3a 10\uff1a1\u3002\u8fd9\u76f8\u5f53\u4e8e\u5728 662 keV \u65f6 7.0% \u7684\u80fd\u91cf\u5206\u8fa8\u7387\u3002\u5728 5.9 keV \u65f6\uff0c\u9ad8\u8d28\u91cf\u7684 NaI\uff08Tl\uff09 X \u5c04\u7ebf\u63a2\u6d4b\u5668\u7684 P\/V \u6bd4\u4e3a 40\uff1a1\u3002<\/p>\n e.\u9891\u8c31\u7a33\u5b9a<\/strong><\/p>\n \u8f83\u5927\u7684\u8ba1\u6570\u901f\u7387\u53d8\u5316\u548c\u6e29\u5ea6\u53d8\u5316\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8c31\u56fe\u4e2d\u7684\u5cf0\u4f4d\u7f6e\u53d8\u5316\u3002\u8fd9\u79cd\u6548\u5e94\u5728\u95ea\u70c1\u63a2\u6d4b\u5668\u4e2d\u662f\u4e0d\u53ef\u907f\u514d\u7684\uff0c\u56e0\u4e3a\u95ea\u70c1\u4f53\u7684\u5149\u8f93\u51fa\u548c\u5149\u63a2\u6d4b\u5668\u653e\u5927\uff08\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff09\u4e0e\u6e29\u5ea6\u6709\u5173\u3002 \u4e3a\u4e86\u8865\u507f\u8fd9\u4e9b\u5f71\u54cd\uff0c\u53ef\u4ee5\u4f7f\u7528\u6240\u8c13\u7684\u00a0Am \u8109\u51b2\u53d1\u751f\u5668<\/strong>\u6821\u51c6\u5cf0\u503c\u4f4d\u7f6e\u3002<\/p>\n \u8fd9\u662f\u4e00\u4e2a\u5b89\u88c5\u5728\u95ea\u70c1\u63a2\u6d4b\u5668\u5185\u7684\u975e\u5e38\u5c0f\u7684\u653e\u5c04\u6027 241Am \u6e90\u3002241Am \u53d1\u5c04\u7684 \u03b1 \u7c92\u5b50\u4f1a\u5728\u6676\u4f53\u4e2d\u5f15\u8d77\u95ea\u70c1\uff0c\u8fd9\u4e9b\u95ea\u70c1\u88ab\u63a2\u6d4b\u5668\u7684 PMT\uff08\u6216\u5149\u7535\u4e8c\u6781\u7ba1\uff09\u68c0\u6d4b\u5230\u3002\u5bf9\u4e8e NaI\uff08Tl\uff09\uff0c\u03b1 \u5cf0<\/strong>\u4f4d\u4e8e 1.5 \u548c 3.5 MeV \u7684\u00a0Gamma \u7b49\u6548\u80fd\u91cf \uff08GEE\uff09<\/strong>\u00a0\u4e4b\u95f4\uff0c\u53ef\u4ee5\u6307\u5b9a\u3002\u8ba1\u6570\u7387\u901a\u5e38\u4e3a 50\u3001100 \u6216 200 cps\u3002\u8109\u51b2\u53d1\u751f\u5668\u5cf0\u503c\u7684\u4f4d\u7f6e\u7528\u4f5c\u53c2\u8003\uff0c\u4ee5\u8865\u507f\u4e0a\u8ff0\u63a2\u6d4b\u5668\u54cd\u5e94\u7684\u53d8\u5316\u3002<\/p>\n \u4e0a\u8ff0\u6821\u51c6\u65b9\u6cd5\u5e76\u4e0d\u7406\u60f3\uff0c\u56e0\u4e3a\u5927\u591a\u6570\u95ea\u70c1\u6676\u4f53\u5bf9\u4f3d\u9a6c\u5c04\u7ebf\u548c\u03b1\u7c92\u5b50\u7684\u54cd\u5e94\u662f\u4e0d\u540c\u7684\u3002\u7136\u800c\uff0c\u4ec5\u5728\u5927\u6e29\u5ea6\u8303\u56f4\u4e0b\u624d\u9700\u8981\u4f7f\u7528\u70ed\u654f\u7535\u963b\u7b49\u8fdb\u884c\u4e8c\u9636\u8865\u507f\u3002<\/p>\n \u4e3a\u4e86\u5076\u5c14\u76d1\u63a7\u7cfb\u7edf\u5b8c\u6574\u6027\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u53d1\u5149\u4e8c\u6781\u7ba1 \uff08LED\uff09 \u6216\u6fc0\u5149\u7aef\u53e3\u3002LED \u53ef\u4ee5\u5b89\u88c5\u5728\u95ea\u70c1\u63a2\u6d4b\u5668\u5185\u90e8\uff0c\u4e5f\u53ef\u4ee5\u4e3a\u6b64\u63d0\u4f9b\u4e00\u4e2a\u7a97\u53e3\u3002\u5b58\u5728\u4e00\u4e9b\u7279\u6b8a\u7cfb\u7edf\uff0c\u5b83\u4eec\u901a\u8fc7\u5c06\u8109\u51b2 LED \u5149\u6ce8\u5165\u5149\u68c0\u6d4b\u5668\u5e76\u5c06\u5176\u4e0e\uff08\u7a33\u5b9a\u7684\uff09\u5185\u7f6e\u534a\u5bfc\u4f53\u68c0\u6d4b\u5668\u7684\u4fe1\u53f7\u8fdb\u884c\u6bd4\u8f83\uff0c\u4ece\u672c\u8d28\u4e0a\u7a33\u5b9a\u68c0\u6d4b\u5668\u7684\u589e\u76ca\u3002<\/p>\n \u9664\u4e86\u4e0a\u8ff0\u8109\u51b2\u9ad8\u5ea6\u7a33\u5b9a\u65b9\u6cd5\u5916\uff0c\u5f53\u7136\u4e5f\u53ef\u4ee5\u5728\uff08\u59cb\u7ec8\u5b58\u5728\u7684\uff09\u5916\u90e8\u6e90\u7684\u5cf0\u503c\u4e0a\u8fdb\u884c\u7535\u5b50\u7a33\u5b9a\u3002\u6709\u65f6 40K \u80cc\u666f\u7ebf\u53ef\u7528\u4e8e\u6b64\u76ee\u7684\u3002<\/p>\n<\/div>\n<\/section>\n \u8377\u5170Scionix\u95ea\u70c1\u63a2\u6d4b\u5668|\u901a\u8fc7\u7535\u79bb\u8f90\u5c04\u635f\u5931\u7684\u80fd\u91cf\u8f6c\u5316\u4e3a\u5149\u8109\u51b2\u7684\u6750\u6599 \u95ea\u70c1\u63a2\u6d4b\u5668 \u95ea\u70c1\u4f53\u662f\u4e00\u79cd\u5c06\u901a\u8fc7\u7535\u79bb\u8f90\u5c04\u635f\u5931\u7684\u80fd\u91cf\u8f6c\u5316\u4e3a\u5149\u8109\u51b2\u7684\u6750\u6599\u3002\u5728\u5927\u591a\u6570\u95ea\u70c1\u8ba1\u6570\u5e94\u7528\u4e2d\uff0c\u7535\u79bb\u8f90\u5c04\u4ee5 X <\/p>\n","protected":false},"author":36,"featured_media":226,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_vp_format_video_url":"","_vp_image_focal_point":[]},"categories":[15],"tags":[20,21,22,23,19,18,24,14,17,16],"yoast_head":"\n\u4e00\u822c\u4fe1\u606f<\/strong><\/h5>\n
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\n\uff081998 \u5e74\uff09\uff0c\u7b2c 456-461 \u9875<\/em><\/p>\n<\/p>\n
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\n\u5149\u7535\u500d\u589e\u7ba1\u8bfb\u51fa\u60c5\u51b5\u4e0b\u7684\u53e6\u4e00\u4e2a\u7a0b\u5e8f\u662f PMT \u4e2d\u7684\u78c1\u6ede\u548c\u8bb0\u5fc6\u6548\u5e94\uff0c\u8fd9\u4f7f\u6821\u6b63\u7b97\u6cd5\u590d\u6742\u5316\u3002\u5728\u7845\u5149\u7535\u500d\u589e\u7ba1\u4e2d\u4e0d\u5b58\u5728\u8fd9\u79cd\u6548\u5e94\u3002<\/p>\n<\/a><\/p>\n