image missingTrue Value Metrics (TVM)
Meaningful Metrics for a Smart Society
image missing Navigation ... HOME
HOME BRIEF PROBLEMS
POSSIBILITIES
SYSTEM
OVERVIEW
PROGRESS
PERFORMANCE
STATE
CAPITALS
FLOW
ACTIVITIES
FLOW
ACTORS
EFFECTIVE
MANAGEMENT
PETER
BURGESS
SiteNav SitNav (1) SitNav (2) SitNav (3) SitNav (4) SitNav (5) SitNav (6) SitNav (7) SitNav (8)
Date: 2019-09-16 Page is: DBtxt001.php txt00009973

Science
Japanese system for seeing very small objects

SACLA Magnifies World's Smallest Object - X-ray Free Electron Laser

Burgess COMMENTARY

Peter Burgess

SACLA Magnifies World's Smallest Object - X-ray Free Electron Laser

SACLA, pronounced さくら (Sa-Ku-Ra) is the free-electron laser, or X-FEL in Japan, embedded in the SPring-8 accelerator and synchrotron complex.[1] Operational since 2011, it is the brightest X-ray source of the world.

What is X-ray Free Electron Laser?

To gain a full understanding of physical and biological phenomena, we need to look at the way atoms and molecules are structured and function, and how the electrons within them move. Being able to directly observe the arrangement and movements of these atoms and electrons would enable us to develop drugs for hard-to-cure diseases and treat harmful chemicals that damage the environment, thus contributing to human welfare.

X-rays are one key to making this happen. Discovered in 1895 by Willhelm Roentgen, x-rays are most well-known today for their use in hospitals. X-rays are light with a much shorter wavelength than visible light. In addition to medical applications, they can be used to examine microstructures at the atomic and molecular level. SPring-8, a synchrotron facility, is one of the world’s most powerful x-ray sources, but it is still not powerful enough to allow us to see the extremely rapid movements of atoms and molecules.

Lasers are another key to this goal. Researchers realized that if they could make a laser, which emits a very powerful burst of concentrated light, emit x-ray light, they could use it to observe the instantaneous movement of electrons and molecules. Lasers emit coherent light (with the waves of the light matching one another), and can be used for a number of optical technologies. X-ray lasers, however — while a longtime dream — have in the past been beyond the reach of technology of the day.

Unlike traditional methods based on the light-emitting properties of materials, the building of an x-ray laser requires accelerating electrons to high energies, manipulating their motion, and using the light emitted during the process of acceleration. Since it is free electrons removed from atoms that are used to produce the x-ray laser, this new type of device is called an X-ray Free Electron Laser, or XFEL. This laser makes it possible for us to observe atoms and molecules in real time.

We'll be introducing the 700 meter long X-ray laser facility SACLA, where things that are a billionth of a millimeter become visible. This feat is made possible with a powerful X-ray laser. The electrons are drastically accelerated until a light that is a hundred million times a hundred million times brighter than sunlight is produced. This makes it possible for scientists to observe things that were once limited to speculation. A collection of Japan's original and sophisticated technologies was used to create SACLA, a giant microscope that can reveal objects on the atomic level.



Published on Mar 12, 2015
The text being discussed is available at
https://youtu.be/svOPybbLrs8
and

SITE COUNT
Amazing and shiny stats
Blog Counters Reset to zero January 20, 2015
TrueValueMetrics (TVM) is an Open Source / Open Knowledge initiative. It has been funded by family and friends plus donations from well wishers who understand the importance of accountability and getting the management metrics right. TVM is a 'big idea' that has the potential to be a game changer leveling the playing field so the wealth and power is shared on a more reasonable basis between people who work for a living and those that own the economy and the levers of power. In order to be effective, it cannot be funded in the conventional way with a for profit business plan, but absolutely must remain an open access initiative.
WE WANT TO MAINTAIN AN OPEN KNOWLEDGE MODEL
A MODEST DONATION WILL HELP MAKE THAT HAPPEN


The information on this website may only be used for socio-enviro-economic performance analysis, personal information, education and limited low profit purposes
Copyright © 2005-2019 Peter Burgess. All rights reserved.