{"id":1064,"date":"2022-12-02T07:22:32","date_gmt":"2022-12-02T07:22:32","guid":{"rendered":"https:\/\/www.shalomeo.com\/blog\/?p=1064"},"modified":"2022-12-02T07:22:32","modified_gmt":"2022-12-02T07:22:32","slug":"development-of-a-fast-plastic-scintillators-detector-with-time-resolution-of-less-than-10-ps","status":"publish","type":"post","link":"https:\/\/www.shalomeo.com\/blog\/development-of-a-fast-plastic-scintillators-detector-with-time-resolution-of-less-than-10-ps\/1064.html","title":{"rendered":"Development of a fast plastic\u00a0scintillators detector with time resolution of less than 10 ps"},"content":{"rendered":"\n<p>The <strong><a href=\"https:\/\/www.shalomeo.com\/Scintillators\/Plastic-Scintillators\" target=\"_blank\" rel=\"noreferrer noopener\">plastic scintillator<\/a><\/strong> is probably one of the most widely used organic detectors in nuclear and particle physics. Its mounting, operation and handling are relatively simple, and well-understood, and thus it is often equipped in the Time-Of-Flight (TOF) measurements.<\/p>\n\n\n\n<p>A TOF resolution of about 100 ps is enough for most of the general-purpose applications, e.g. for particle identification of radioactive beam with mass number less than 100. However, in recent years there are increasing demands for ultra-fast timing-pick up detectors in high precision measurements. Here we take a TOF mass spectrometry (MS) as an example to illustrate the importance of time determination. The TOF-MS is known as one of the most efficient methods for mapping the nuclear mass surface for short-lived nuclei near the drip line. Currently the single-pass TOF-MS can achieve a mass resolving power of about 5000, and the dominant source is the time resolution of TOF measurements. For a typical flight time of about 500 ns, if the time resolution were improved from current 100 ps to about 10 ps, the final mass resolution of TOF-MS could in principle be enhanced by up to one order of magnitude. This corresponds to an uncertainty of about \u00b1500 keV for the mass of a single nucleus with A ~ 50.<\/p>\n\n\n\n<p>If succeed, the TOF-MS could significantly speed up the march towards mass measurements of the most neutron-rich nuclei with fairly good precision. The main motivation of present work is to develop a TOF system based on fast plastic scintillators for the TOF-MS measurement of heavy ions at relativistic energies of several hundred MeV\/u.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The plastic scintillator is probably one of the mo &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[268],"_links":{"self":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/posts\/1064"}],"collection":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/comments?post=1064"}],"version-history":[{"count":0,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/posts\/1064\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/media?parent=1064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/categories?post=1064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shalomeo.com\/blog\/wp-json\/wp\/v2\/tags?post=1064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}