SU455419A1 - Method for measuring relaxation time of energy levels of a substance - Google Patents

Description

one

The invention relates to the field of quantum electroics and can be used in the determination of physicochemical verion HICCTB.

There is no known way to measure the relaxation time of various energy levels of a substance, which results in a violation of the thermodynamic equilibrium of a substance by acting on its high-power laser radiation at a frequency corresponding to a quantum transition, one of the conditions of which I1 is the level of interest.

With sufficient irradiation power at the frequency of the transition, the transition is saturated, i.e., the level of population of the lower and upper levels is equal, and the transition is brightened, i.e. radiation absorption at the transition frequency does not go. After the cessation of radiation due to, to the left, and relaxation of the population, the levels are restored and the absorption at the non-transition frequency changes accordingly. By the change in absorption of radiation, iBreme relaxation is judged.

However, when using it, it is known that the measurement method from one of the eeniae of absorption can give safe results in the case if some of the electrons fall on intermediate levels and the population of the second level

The transition is also unknown.

The purpose of the invention is to increase the TOHHOCTIJ measurements and expand the range of the levels studied and the measured times.

The goal is achieved due to the fact that according to the proposed method, the investigated substance in a non-equilibrium state irradiates a monochromatic irradiated optical quantum generator LKG at the transition frequency between the level and the level that are not involved. m in the studied system of transitions. By varying the absorption of radiation, a laser decides about the time to relativize excited levels of a substance.

There are different methods for adjusting the frequency of a south-wave laser, so choosing a frequency in a wide range is not difficult.

The proposed method is easy to implement in a wide time interval. Especially. But it has a great advantage. It has a lot of measures in the region of small relaxation times.

With the help of a method of determining the relaxation of the energy level of substances located in a wide range of temperatures and pressures.

Subject matter and ii

Nemerenia method (Relaxation Time Levels The energy of a substance, which consists in disturbing the thermal equilibrium in a substance, for example, by irradiating it with electromultiplier radiation and measuring B | time to return the disturbed level to a balance that differs from measurement accuracy and

In addition to the range and the measured times, the test substance in an unequal state is irradiated with monochromatic radiation at the transition frequency between the disturbed level and the level that does not participate. The IMI in the transition system under study, the law of population variation of which is determined and measured relaxation time is based on the change in the absorption of said radiation.