跳转到内容

File:PIA18388-MarsCuriosityRover-NovaRock-ChemCam-20140712.jpg

页面内容不支持其他语言。
這個文件來自維基共享資源
维基百科,自由的百科全书

原始文件 (1,590 × 1,060像素,文件大小:327 KB,MIME类型:image/jpeg


摘要

描述
English: 07.16.2014

Curiosity's ChemCam Examines Mars Rock Target 'Nova'

http://mars.jpl.nasa.gov/msl/multimedia/images/?ImageID=6443

A Martian target rock called "Nova," shown here, displayed an increasing concentration of aluminum as a series of laser shots from NASA's Curiosity Mars rover penetrated through dust on the rock's surface. This pattern is typical of many rocks examined with the rover's laser-firing Chemistry and Camera (ChemCam) instrument.

In the first two years since Curiosity landed in Mars' Gale Crater in August 2012, researchers have used ChemCam's laser and spectrometers to examine more than 600 rock or soil targets. The process, called laser-induced breakdown spectroscopy, hits a target with pulses from a laser to generate sparks, whose spectra provide information about which chemical elements are in the target. Multiple laser shots are fired in sequence, each blasting away a thin layer of material so that the following shot examines a slightly deeper layer.

The photograph at left is from ChemCam's Remote Micro-Imager camera, taken during the 687th Martian day, or sol, of Curiosity's work on Mars (July 12, 2014). It shows a portion of the surface of Nova about 1.6 inches (4 centimeters) wide, centered at the spot where laser shots hit the baseball-size rock that same sol.

The graph at right show the brightness of the resulting spark at a range of wavelengths detected from each of the first 10 laser shots out of 100 total shots fired at the same point on the rock. The initial shots generated less brightness at a wavelength that is diagnostic for aluminum content, compared to shots after the dust coating on the rock had been cleared away by those first few shots.

ChemCam's laser zapping of this rock was the first ever during which Curiosity's arm-mounted Mars Hand Lens Imager (MAHLI) camera took images that caught the spark generated by a laser hitting a rock on Mars (see PIA18401).

ChemCam is one of 10 instruments in Curiosity's science payload. The U.S. Department of Energy's Los Alamos National Laboratory, in Los Alamos, New Mexico, developed ChemCam in partnership with scientists and engineers funded by the French national space agency (CNES), the University of Toulouse and the French national research agency (CNRS). More information about ChemCam is available at http://www.msl-chemcam.com
日期
来源 http://mars.jpl.nasa.gov/msl/images/PIA18388_ChemCam-Nova-full.jpg
作者 NASA/JPL-Caltech/LANL/CNES/IRAP/LPGNantes/CNRS/IAS

许可协议

Public domain 本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zhNASA版权方针页面JPL图片使用方针。)
警告:

说明

添加一行文字以描述该文件所表现的内容

此文件中描述的项目

描繪內容

335,055 字节

1,060 像素

1,590 像素

image/jpeg

4bba928bc82cb415a7076e9dbd12b5cc2ef8a3c3

文件历史

点击某个日期/时间查看对应时刻的文件。

日期/时间缩⁠略⁠图大小用户备注
当前2014年8月7日 (四) 12:232014年8月7日 (四) 12:23版本的缩略图1,590 × 1,060(327 KB)DrbogdanUser created page with UploadWizard

以下2个页面使用本文件:

全域文件用途

以下其他wiki使用此文件:

元数据