春雨里 - 吴青峰, 李宇春

We present Korea Microlensing Telescope Network (KMTNet) light curves for microlensing-event candidates in the Kepler K2 C9 field having peaks within 3 effective timescales of the Kepler observations. These include 181 "clear microlensing" and 84 "possible microlensing" events found by the KMTNet event finder, plus 56 other events found by OGLE and/or MOA that were not found by KMTNet. All data for the first two classes are immediately available for public use without restriction.

The exchange interaction is considered to play the dominant role in the quenching of 5D0—7F2 emission of Eu3+ in Y2O3 nanocrystals.Luminescence decay curves of 5D0-7F2 of Eu3+ in two sizes of nanocrystals were measured.We fit the luminescence decay curve by the Inokuti-Hirayama theory.The efficiencies of energy transfer of exchange interaction were calculated.The difference between theoretical and experimental curves of efficiency was analyzed.