摘要
ThevalencechangesofdopedsamariumandthecreationaswellastheannihilationofF-centersintheprocessesofthermostimulatedluminescence（TSL）andphotostimulatedluminescence（PSL）ofBaFCl∶Smcrystalhavebeenstudied.AsbeingirradiatedbyX-ray,alargenumberofelectron-holepairsarecreatedinthecrystal.Mostoftheelectronsmaybetrappedattheanionvacancies,producingF-centers.Thedopedsamariumions,whichexistedmostlyintrivalentstate(Sm3+),maycapturetheholesandconvertthemselvestotetravalentstate.SothatpartoftheincidentX-rayenergyarestoredinthisnonequilibriumsystem.Onopticalandthermalstimulationthestoredenergycanbeliberatedasacharacteristicemissionoftrivalentsamariumion.ThisemissionoriginatesfromtherecombinationoftheF-centerelectronswithtetravalentsamariumions,i.e.theF-centerelectronsmaybeexcitedtotheconductionbandbyopticalorthermalstirnulationandthenrecombinewithtetravalentsamariumions.ThisrecombinationmakesthesamariumionstobeinsitureducedtotheexcitedstateofSm3+,andgivesrisetothecharacteristicemissionofSm3+.Ontheotherhand,duringX-irradiationafewelectronscanbetrappedatthesitesoftrivalentsamariumionsandreducethemtodivalentstate.ButtheformationofdivalentsamariumOnX-irradiationisverysmallascomparedwiththatofF-centersandsotheirinfluenceonthePSLandTSLcanbeneglected.
出版日期
1990年01月11日（中国Betway体育网页登陆平台首次上网日期，不代表论文的发表时间）
