公开(公告)号：WO1998022788A1

公开(公告)日：1998-05-28

申请号：PCT/US1997021298

申请日：1997-11-18

Applicant: IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.

Inventor： IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC. ,  GSCHNEIDNER, Karl, A., Jr. ,  PECHARSKY, Vitalij, K. ,  MOORMAN, Jack, O.

IPC: G01K17/00

CPC classification number: G01K17/00 ,  G01N25/005

Abstract: Apparatus and method for measuring the heat capacity of a sample (S) where a series of measurements are taken in succession. The apparatus comprises a sample holder (12), a temperature sensor (24), a sample heater (28) for providing a heat pulse upon receiving an electrical output from a first power supply (DC current source in the figure), an adiabatic heat shield (50) in which the sample holder (12) is positioned, and a heat shield electrical heater (51) which receives electrical power from a second power supply (DC current source in the figure). This electrical power being adjusted by a control device (computer in the figure), if necessary, from one measurement to the next in response to a sample temperature-versus-time change determined before and after a previous heat pulse so as to provide a subsequent sample temperature-versus-time change that is substantially linear before and after the subsequent heat pulse. Optionally, the sample (S) may be subjected to DC magnetic fields.

Abstract translation: 用于测量样品（S）的热容量的装置和方法，其中连续进行一系列测量。 该装置包括样本保持器（12），温度传感器（24），用于在从第一电源（图中的DC电流源）接收电输出时提供加热脉冲的样品加热器（28），绝热 其中所述样品保持器（12）所在的屏蔽件（50）和从第二电源（图中的DC电流源）接收电力的隔热电加热器（51）。 响应于先前加热脉冲之前和之后确定的样品温度 - 时间变化，该电力由需要时的控制装置（图中的计算机）调整为从一个测量到下一个测量，以便提供随后的 在随后的加热脉冲之前和之后基本上线性的样品温度 - 时间变化。 可选地，样品（S）可以经受直流磁场。