Light and small extraterrestrial planet in-situ dating instrument and dating method thereof

Abstract

The invention belongs to the technical field of geological dating and deep space exploration equipment and particularly relates to a light and small extraterrestrial planet in-situ dating instrument. The instrument comprises a micro X-ray tube (1), an X-ray fluorescence spectrometer (2), a micro focal spot electron beam tube (3), a mass spectrometer (4), an X-ray capillary lens (5), a fixed base (14), a support (13), a sample chamber (7), a vacuum pump support (15) and a vacuum pump (6), wherein the micro X-ray tube (1) and the micro focal spot electron beam tube (3) are sequentially arranged on one side of the X-ray fluorescence spectrophotometer (2), and the X-ray fluorescence spectrophotometer (2), the micro X-ray tube (1) and the micro focal spot electron beam tube (3) form a trident structure and are arranged on the sample chamber (7); the micro X-ray tube (1) and the X-ray capillary tube lens (5) are arranged in an up-down structure; the mass spectrometer (4) is arranged on the sample chamber (7) and is communicated with the sample chamber (7); and the vacuum pump (6) is communicated with the sample chamber (7) and the mass spectrometer (4).

Description

technical field [0001] The invention belongs to the technical field of geological dating and deep space detection equipment, and in particular relates to a light and small exoplanet in-situ dating instrument and a dating method thereof. Background technique [0002] Time is one of the core scientific issues in our understanding of the origin and evolution of the planets, the solar system and even the universe. The determination of the age of the surface of extraterrestrial celestial bodies is of great value to the study of the formation history and evolution of planets, resource exploration, ore biological evolution, climate change laws, environmental changes and other research. For the in situ dating of exoplanets, the K-Ar dating method is an ideal choice, that is, using the 40 K decays into 40 Ar phenomenon, measured in rocks 40 K and 40 The mass percentage of Ar element can be used to calculate the rock age. The specific formula for determining the year is as follow...

AI Technical Summary

Problems solved by technology

Therefore, whether it is the APXS plus MS dating scheme or the LIBS plus MS technical scheme, additional technical means are needed to achieve sample quality measurement, which increases the resource requirements of dating instruments in terms of weight and power consumption. Thus limiting the application of this technology in space

In addition, the mass measurement error also affects the dating accuracy of the dater

In addition, the weight of APXS and LIBS itself is also at the kilogram level, so it is impossible to achieve light and small size by using the existing two technical solutions

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