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In this work, we describe the Project\u00a08 Phase\u00a0II apparatus,\n  used for the detection of the CRES signal from the conversion\n  electrons of\n                    <jats:sup>83m<\/jats:sup>\n                    Kr and the first CRES measurement of\n  the beta-decay spectrum of molecular tritium.\n                  <\/jats:p>","DOI":"10.1088\/1748-0221\/21\/02\/p02026","type":"journal-article","created":{"date-parts":[[2026,2,12]],"date-time":"2026-02-12T14:56:09Z","timestamp":1770908169000},"page":"P02026","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Project 8 apparatus for cyclotron radiation emission spectroscopy with\n                    <sup>83m<\/sup>\n                    Kr and tritium"],"prefix":"10.1088","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4295-9570","authenticated-orcid":false,"given":"A.","family":"Ashtari 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