The Japanese Industrial Technology Research Institute issued a communiqué on November 1st that the Ytterbium atomic light lattice clock developed by the Institute only had an error of one second after 9 million years of operation, and was selected as the new Define the "alternate player" of the standard.
The bulletin said that the researchers of the institute developed a ytterbium atomic light lattice clock with an error of only one second for 600,000 years of operation in 2009, and improved the frequency control of the laser light source to reduce the optical lattice caused by ytterbium atoms The noise of the clock signal greatly improves the accuracy of the optical lattice clock in measuring the frequency of the ytterbium atom, which is equivalent to an error of one second only after 9 million years of operation. Its accuracy has reached 3 million required by the new standard for seconds The standard of annual error is less than one second, so it is adopted.
The bulletin said that time and frequency are the most likely to be accurately measured in all measurements, and also the basis for the accuracy of other basic measurement units such as length and voltage. At present, one second as the basic unit of time is defined by the number of vibration frequencies of cesium atoms. At the 2006 International Metric Convention Organization meeting, the participants began to discuss a more precise definition of seconds, and hope that all parties concerned support the research and development of the new generation of atomic clocks.
Ytterbium atoms are less affected by electromagnetic radiation, and their nuclear spins are also smaller. In theory, the Ytterbium atomic light lattice clock can achieve an accuracy of less than one second with an error of 13.7 billion years. The Japan Institute of Industrial Technology is planning to further improve the accuracy and stability of the Ytterbium atomic light lattice clock, making it a more ideal standard.
The so-called atomic clock is a clock that uses the vibration of electrons in an atom as a vibrator. Among them, a clock that uses electronic vibration of an optical band as a vibrator is called an optical clock. The optical lattice clock is a type of optical clock.
Other Wipes,Other Papers,Other Facial Tissue,Other Tissues
ShanDong YongFang Sanitary Products Co.,Ltd , https://www.sdyongfang.com