公开(公告)号：WO2006124527A3

公开(公告)日：2007-08-02

申请号：PCT/US2006018282

申请日：2006-05-11

Applicant: CORNELL RES FOUNDATION INC

Inventor： LAL AMIT ,  LI HUI ,  GUO HANG ,  RADHAKRISHNAN SHANKAR

IPC: G01T1/20 ,  G01T1/24

CPC classification number: G04F5/16 ,  G01T1/171

Abstract: A signal source for use as a frequency source or time keeping signal source includes a radioactive emission source generating a substantially periodic signal corresponding to a radioactive material's disintegration rate. A radioactive emission detector generates a radioactive emission detection signal and, to stabilize the detected periodic signal, a dead time controlling attenuator blanks or shuts off the radioactive emission detection signal for a selected dead time interval in response to each detected radioactive emission (i.e., a detected signal pulse or signal component) generated by the source. The dead time controlling attenuator output provides a long-term and short-term a stable periodic signal.

Abstract translation: 用作频率源或时间保持信号源的信号源包括产生对应于放射性物质的崩解速率的基本周期性信号的放射性发射源。 放射性发射检测器产生放射性发射检测信号，并且为了稳定检测到的周期信号，控制衰减器的死区时间响应于每个检测到的放射性发射而对所选择的死区间隔进行空白或关闭放射性发射检测信号（即， 检测信号脉冲或信号分量）。 死区时间控制衰减器输出提供长期和短期稳定的周期信号。