低溫測量中熱沉的分析.pdf

1、西北師范大學碩士學位論文低溫測量中熱沉的分析姓名：邊海琴申請學位級別：碩士專業(yè)：凝聚態(tài)物理指導教師：孫愛民20050501AbstraetFirst，thedevelopmentofthelow—temperaturetechnologyisreviewedinthepaperthemostmeansissimplyintroducedtoobtainthelowtemperatureandinfinitesimaltemperatur

2、e，andtheapplicationoflow—temperaturetechnologyisintroducedInsuccession，thepapercalculatedandanalyzedsizeeffectofheatsinkinthelow—temperaturemeasurementTeducetheamountofheatloadinthethermometerduetoelectricalleadsofheatco

3、nductionandimprovetheaccuracyoftemperaturemeasurement，itisveryimportantandvirtualtoutilizeheatsinkThepaperanalyzedanddiscussedonedimensionalandtwodimensionalheatsinkintheoryTheresultofcalculationinonedimensionalheatsinks

4、howsthatthelengthofheatsinkisreducedwithincreasingelectricalleadsInthiswayheatloadofthermometerisreduced，soastoguaranteetheprecisionoftemperaturemeasurementInthispaper，weanalyzedanddiscussedsizeeffectoftwo—dimensionalhea

5、tsinkintheoryTheresultofcalculationandanalysisindicatesthattwo—dimensionalheatsinkisbetterthanone’dimensionaloneVariouskindsofleakheatandsizeofheatsinkaleparticularlydiscussedintheuseofheatsinkDeviceofonedimensionalheats

6、inkiscalculatedandanalyzedinbigelectriccurrentandlowtemperature，andtherelationshipbeendiscussedamongthelengthofone—dimensionalheatsink，electriccurrentandthelengthofelectricalleads，selfheatingoftheelectricalleadsandthehea

7、tsinkmustbecalculatedinthedeviceofheatsink，itismuchshorterandthickeritismuchbetterthatelectricalleadsconnecttemperaturesensorandheatsink，soaStoreducetheheatloadonthethermometerTheresultofcalculationandanalysisindicatesth

8、atinthelowtemperatureexperimentalmeasurement，itisnecessaryandeffectivetouseheatsink，especiallyintwodimensionalheatsinkTheheatsinkcarleffectivelyguaranteethereducingoftheheatloadonthethermometerandimprovetheaccuracyoftemp