Terra is the world's first portable X-ray diffraction (XRD) and X-ray fluorescence (XRF) analyzers, by American Enos (Innov-X) company developed and produced by the China Science and Technology Development Co., Ltd. of Shenzhen City Railay exclusive agent, X ray diffraction instrument was used in the cement clinker, university research labs, phase analyzer, physical structure. (1) Collection of rock and mineral data field environment; (2) processing from the X-ray diffraction pattern matching data file intercepted data, the X-ray fluorescence quantitative analysis or qualitative analysis. As a specifically designed and developed for the NASA Mars vehicle for mineral analysis of new products, has successfully equipped Spirit, Opportunity, Phoenix and other Mars probe to Mars and complete mineral research services. Terra simple design to subvert the traditional structure of the X-ray diffractometer for XRD portable and environmentally friendly energy to pave the way; Meanwhile, a total weight of 14.5kg, but also for XRD from the laboratory to the factory and cleared the way for the project site. Terra development history in 1996, NASA (NASA) to be able to study minerals on Mars as a target, so in the global search for XRD solutions. After investigation, the conventional XRD can not meet NASA Mars project, they have a bulky, heavy weight, energy consumption, require cooling systems, sample particles need to 2um, rotating optical devices, etc. to common, can not meet any one remote on Mars , automation, reliability, accuracy of the measurement requirements. In 1997, NASA's organizational MIT, Caltech, Stanford University, Indiana University, embarked on NASA Mars Exploration Program XRD items. After years of research, spent more than twenty million U.S. dollars, and finally developed a plan to meet Mars XRD, namely Terra series. Terra light in weight, wireless transmission, safe and reliable, accurate data, energy saving has lead times of technological superiority. Terra three major technological breakthroughs 1. Samples shake technology (already obtained patent): the sample placed in the sample chamber to 6000HZ vibration frequency vibration. Its advantage lies in: (1) eliminating the goniometer instrument smaller size, easy to use; (2) to achieve a specific diffraction angle selection and multi-angle measurement; (3) to avoid the specific crystal planes orientation, more in line with principles of statistics, more accurate test results; (4) Sample preparation is simple, reducing the hassle of grinding: - Sample size d <150 um (Terra) vs. <1-2 um (General XRD) - without the sample is made of granular; (5) test speed;-3min (Terra) vs. 15min (General XRD) - no expert operation, anyone can finish (6) avoids the sample particles under gravity bonding the formation of large particles affect the detection accuracy of the results; 2 by two-dimensional CCD image sensor (probe) to collect data, breaking the traditional moves continuously scan method of data collection, so that the sensor can be fixed without the need to move data collection . Its advantage lies in (a) to avoid the more X-ray interference; (2) while collecting X-ray diffraction patterns and X-ray fluorescence, XRD and XRF for simultaneous analysis of three wireless receive data remotely reliable. Terra applications and functions 1. Application areas: (1) Cement (2) Medicine (3) geology, mining (4) Petrochemicals (5) Archaeology (6) Criminal Investigation (7) Artwork identification (8) Environmental Protection (9) Customs detection 2. Main functions: (1) for unknown samples qualitative phase analysis; (2) the characteristic quantitative phase analysis of samples; (3) of the lattice constant; (4) Metal analysis of weak points of stress; (5) XRF qualitative analysis (to help the XRD phase identification); Terra XRD Principle Principle (1) Each crystalline material has its own specific crystal structure parameters; (2) only satisfies the Bragg equation specific crystal plane orientation can produce diffracted beam; (3 ) two interfering light from the source, and thus interfere with each other each phase of the diffraction pattern which is superimposed on the machine. The diffraction pattern, can achieve the following analysis: (1) the diffraction peak position (2θ) and the diffraction intensity * phase qualitative analysis; * lattice constant measurement; * Stress Analysis (2) diffraction peak height (intensity or area) * Property quantitative phase analysis (3) diffraction peak angle and the crystal grain diameter * crystallinity * Terra performance a) small / light weight (the world's first truly portable XRD), suitable for field operations; b) low energy consumption ( more efficient), without cooling system; c) low-power X-ray source, longer life (10 years); d) patented vibrating sample chamber, sample preparation is simple, the grain size (~ 50mg), Terra desired powder size <150um, and a sample with a sieve grinder easily obtained; e) has no moving parts, to enhance the reliability and reduces the service requirements, no calibration; f) CCD detector can be simultaneously detected by X-ray fluorescence; g) the energy sensitive Analysis: can not be used to distinguish between X-ray diffraction of photons, X-ray fluorescence elemental analysis measurement range (Ca-U), for a given phase of the analysis of the ore lower detection limit; h) short test time; i) image resolution high; j) wireless transmission reliability; k) environmental adaptability, able to adapt to the harsh climate on Mars; l) XRD and XRF combined, XRF added to make the phase identification process scan can be done easily, and reduce uncertainty. Meanwhile, XRF detection of the elements, to further evidence the XRD test results, increased accuracy of the analysis. 

keywords: X-ray diffraction, x-ray diffraction agents, X-ray diffraction distribution,