Thermal decay rate of a metastable state with two degrees of freedom: Dynamical modelling versus approximate analytical formula; Pramana - Journal of Physics; Vol. 88, iss. 6

Thermal decay rate of a metastable state with two degrees of freedom: Dynamical modelling versus approximate analytical formula; Pramana - Journal of Physics; Vol. 88, iss. 6

Bibliografiska uppgifter
Parent link:Pramana - Journal of Physics
Vol. 88, iss. 6.— 2017.— [90, 10 p.]
Huvudupphovsman: Gonchar I. I. Igor Ivanovich
Institutionell upphovsman: Национальный исследовательский Томский политехнический университет (ТПУ) Физико-технический институт (ФТИ) Центр измерений свойств материалов (ЦИСМ)
Övriga upphovsmän: Chushnyakova M. V. Mariya Vladimirovna
Sammanfattning:Title screen
Accuracy of the Kramers approximate formula for the thermal decay rate of the metastable state is studied for the two-dimensional potential pocket. This is done by comparing with the quasistationary rate resulting from the dynamical modelling. It is shown that the Kramers rate is in agreement with the quasistationary rate within the statistical errors provided the absorptive border is far enough from the potential ridge restricting the metastable state. As the absorptive border (or its part) gets closer to the ridge, the Kramers formula underestimates the quasistationary rate. The difference reaches approximately the factor of 2 when the absorptive border coincides with the ridge.
Режим доступа: по договору с организацией-держателем ресурса
Språk:engelska
Publicerad: 2017
Ämnen:
электронный ресурс
труды учёных ТПУ
metastable system
quasistationary decay rate
Kramers rate
dynamical modelling
метастабильные системы
квазистационарная скорость
распады
динамическое моделирование
Länkar:https://doi.org/10.1007/s12043-017-1410-3
Materialtyp: Elektronisk Bokavsnitt
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656881

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