A review of the progress in the physics of ultracold neutrons (UCN), starting with the first experimental studies, is given. Problems dealt with by the author under the supervision of Fyodor L’vovich Shapiro are presented. It is shown how these problems were gradually solved and how their relation to other issues in physics was revealed. A review of the present status of UCN physics is given, and the prospects are discussed.

PACS: 13.30.Ce, 14.20.Dh (all) DOI: 10.1070/PU1996v039n03ABEH000138 URL: https://ufn.ru/en/articles/1996/3/d/ A1996UL16500004 Citation: Ignatovich V K "Ultracold neutrons — discovery and research" Phys. Usp. 39 283–304 (1996) BibTexBibNote ® (generic)BibNote ® (RIS)Medline RefWorks RT Journal T1 Ultracold neutrons — discovery and research A1 Ignatovich,V.K. PB Physics-Uspekhi PY 1996 FD 10 Mar, 1996 JF Physics-Uspekhi JO Phys. Usp. VO 39 IS 3 SP 283-304 DO 10.1070/PU1996v039n03ABEH000138 LK https://ufn.ru/en/articles/1996/3/d/ Оригинал: Игнатович В К «Ультрахолодные нейтроны — открытие и исследование» УФН 166 303–326 (1996); DOI: 10.3367/UFNr.0166.199603d.0303