technology-news

Scientists come closer to making 'elusive' nuclear fusion reaction a reality

Washington, Sept. 25 : Researchers from National Ignition Facility have revealed that they are a lot more closer to igniting a self-sustained fusion reaction with high yields of energy, a feat likened to creating a miniature star on Earth.


Researchers at the National Ignition Facility (NIF) who collaborated with the Department of Energy's Lawrence Livermore National Laboratory, report that there is at least one significant obstacle to overcome before achieving the highly stable, precisely directed implosion required for ignition, but they have met many of the demanding challenges leading up to that goal.

To reach ignition, the NIF focuses 192 laser beams simultaneously in billionth-of-a-second pulses inside a cryogenically cooled hohlraum - a hollow cylinder the size of a pencil eraser.

Within the hohlraum is a ball-bearing-size capsule containing two hydrogen isotopes, deuterium and tritium (D-T). The unified lasers deliver 1.8 megajoules of energy and 500 terawatts of power-1,000 times more than the United States uses at any one moment-to the hohlraum creating an "X-ray oven" which implodes the D-T capsule to temperatures and pressures similar to those found at the center of the sun.

John Edwards, NIF associate director for inertial confinement fusion and high-energy-density science, said what they want to do is use the X-rays to blast away the outer layer of the capsule in a very controlled manner, so that the D-T pellet is compressed to just the right conditions to initiate the fusion reaction.

He said that in their arcticle they reported that the NIF has met many of the requirements believed necessary to achieve ignition-sufficient X-ray intensity in the hohlraum, accurate energy delivery to the target and desired levels of compression-but that at least one major hurdle remains to be overcome, the premature breaking apart of the capsule.

The new study has been published in the journal Physics of Plasmas.

--ANI (Posted on 26-09-2013)

technology-news headlines

Speed-reading apps may impair reading ability: Study

Read tough data sheets on tablets with this device

Cow manure has new antibiotic resistance genes: Study

Soon, futuristic gadget that uses voice to control all aspects of home

Missing Xenon gas may be resting in earth's belly: Study

Wireless speaker with light sensors, microphone

An 'upside-down planet' discovered

Google search, navigation preferred apps among drivers

Biofuels from corn less beneficial than reported: Study

Smart cup that delivers coffee, news too!

In a first, stem cells cloned from human skin

Bulletproof vests from stem cells?

Quick Links: Goa | Munnar | Pondicherry | Free Yearly Horoscope '2014

Comments

Your e-mail:


Your Full Name:


Type verification image:
verification image, type it in the box

Message:

Back to Top