Trying to make the world’s most accurate atomic clock using thorium
Experiments on metal Turim have created a tremendous transformation. Thorium could be used for a new class of atomic clocks and a new way of keeping time more precisely. The global position we use depends on an electron having the right amount of energy to jump around and back.
- ; So it is likely that most modern atomic clocks are off by a second every two hundred million years or so.
Current efforts by groups such as the National Institute of Standards and Technology try to There are ways to increase the accuracy of clocks with methods such as cooling and increasing particle density, but electrons can still vibrate easily and at any moment.
Physicists at Germany’s PTB National Metrology Institute began investigating ways to measure time 15 years ago. They used the transition state inside an atom’s nucleus as a way to measure time.
The density of particles inside the nucleus (for example, the density of particles inside the nucleus of the thorium atom) determines how likely it is to disrupt the state inside it. Therefore, theoretically, the density increases the degree of confidence in the clock rate.
The only problem with this is the high energy required to excite the core state to the ticking state. Therefore, an X or gamma ray is needed to create and start ticking mode.
The thorium 229 nucleus, when exposed to ultraviolet light, has the ability to form a isomer in a temporarily stable state (this state is called pseudostable) obtains Therefore, the thorium 229 nucleus is the current best option for an optical atomic clock based on an atomic nucleus. Because it needs a fine wavelength spectrum. Physicist Eckhard Peek says: The transition state resonance suitable for the clock is very accurate and can only be achieved if the laser beam exactly matches the energy difference of both states. will be observed. In fact, the problem is like finding a needle in a haystack.
Pick and his colleagues must have information about the haystack to solve the problem and find the needle.
Group Working with researchers from the Ludwig Maximilian University of Munich, they analyzed the quasi-stable states of the thorium 229 isomer in an excited state derived from uranium.
The research group used a laser to heat the trapped atoms and studied the light spectrum created by the moving electrons. With such works, the team was able to examine the charge distribution between the core.
- It is impossible to change the direction of the flow of time; But it can be bent
The end result is a better image of the core, with the help of which you can frequency domain It reduced the need to move the nucleus of the atom from the ground state to the excited state and made it tick like a clock. Of course, the accuracy of the thorium nuclear clock is not known; But certainly such an advance opens up a new way to measure seconds.
Improving the accuracy of such clocks plays an important role in the search for the identity of the strange Dark Matter is playing; Because finding its identity largely depends on mass and time. Finding the identity of dark matter is a very fascinating mystery.