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Lithium chemistry #02 - Burning Lithium
Lithium chemistry #02 - Burning Lithium
Published: 2009/07/07
Channel: PeriodicElements
Slow Motion Lithium Combustion
Slow Motion Lithium Combustion
Published: 2009/12/24
Channel: Nick Moore
Lithium Battery Causing Extreme Fumes When Cut
Lithium Battery Causing Extreme Fumes When Cut
Published: 2014/12/29
Channel: Burn Hard Zen
Lithium Metal Experiment FAIL!!!
Lithium Metal Experiment FAIL!!!
Published: 2012/10/20
Channel: CrazyRussianHacker
Burning lithium battery !!!
Burning lithium battery !!!
Published: 2017/01/26
Channel: Mr. Thinker
Lithium - The Lightest Metal on Earth
Lithium - The Lightest Metal on Earth
Published: 2016/08/18
Channel: Thoisoi2 - Chemical Experiments!
Burning lithium
Burning lithium
Published: 2010/03/23
Channel: Pyroxylin
Burning Lithium metal in water
Burning Lithium metal in water
Published: 2010/04/08
Channel: Tanzim Rashid
Burning lithium metal
Burning lithium metal
Published: 2010/05/18
Channel: Diazodinitrophenol
Reaction of Lithium and Oxygen
Reaction of Lithium and Oxygen
Published: 2011/12/08
Channel: NCSSMDistanceEd
Get Lithium Metal From an Energizer Battery
Get Lithium Metal From an Energizer Battery
Published: 2009/06/13
Channel: NurdRage
Burning Lithium metal
Burning Lithium metal
Published: 2017/04/27
Channel: dylan Missuwe
Lithium-ion Car Battery Fire Testing
Lithium-ion Car Battery Fire Testing
Published: 2016/08/15
Channel: Hazard Control Technologies
Lithium Burning
Lithium Burning
Published: 2016/03/22
Channel: Bilal El-Shahal
Lithium Metal Burning
Lithium Metal Burning
Published: 2008/10/09
Channel: 123propanetriol
Lithium in Water - Violent Alkaline Reactions and Burning Hydrogen
Lithium in Water - Violent Alkaline Reactions and Burning Hydrogen
Published: 2010/07/02
Channel: highvoltagefeathers
Burning Lithium in Total Darkness
Burning Lithium in Total Darkness
Published: 2013/03/21
Channel: ChemCamTV
Lithium into 7 Up - Periodic Table of Videos
Lithium into 7 Up - Periodic Table of Videos
Published: 2016/02/17
Channel: Periodic Videos
Lithium burning
Lithium burning
Published: 2016/01/22
Channel: WikiAudio
Burning LITHIUM metal on a Bonfire!
Burning LITHIUM metal on a Bonfire!
Published: 2016/04/16
Channel: Rich And Ben Do Science
Lithium Battery vs. Water
Lithium Battery vs. Water
Published: 2013/04/24
Channel: TiEx
Lithium Battery Burning | TGB Dirbtuve
Lithium Battery Burning | TGB Dirbtuve
Published: 2015/10/29
Channel: TGB Dirbtuvė
Burning lithium, sodium and potassium in chlorine gas - experiment 3
Burning lithium, sodium and potassium in chlorine gas - experiment 3
Published: 2016/06/24
Channel: Nigel Baldwin
Burning lithium, sodium and potassium in chlorine gas
Burning lithium, sodium and potassium in chlorine gas
Published: 2016/06/22
Channel: Nigel Baldwin
Burning Lithium Battery Coin Sized-Exploding Battery
Burning Lithium Battery Coin Sized-Exploding Battery
Published: 2014/01/19
Channel: GEORGE ZARIFIS
lithium burning
lithium burning
Published: 2012/06/10
Channel: Jonathan Doucette
Burning Lithium from a flat Energiser battery.©
Burning Lithium from a flat Energiser battery.©
Published: 2010/04/28
Channel: Green Silver
Playing With Lithium metal - Water + Fire Reactions
Playing With Lithium metal - Water + Fire Reactions
Published: 2015/11/17
Channel: Paul Pyro
Lithium burning
Lithium burning
Published: 2012/02/20
Channel: Pyromaster1
Burning lithium metal in pure oxygen!
Burning lithium metal in pure oxygen!
Published: 2016/01/27
Channel: SciencePosts
Lithium battery in iceblock burns out
Lithium battery in iceblock burns out
Published: 2011/08/31
Channel: RODALCO2007
Burning lithium and water reaction
Burning lithium and water reaction
Published: 2012/09/18
Channel: htirah100
LITHIUM BURNING FLAME
LITHIUM BURNING FLAME
Published: 2010/03/06
Channel: PubliosValesios
Burning Lithium in Water Close Up
Burning Lithium in Water Close Up
Published: 2016/01/04
Channel: EH Productions Videos
Burning Lithium metal
Burning Lithium metal
Published: 2013/11/28
Channel: Ariel Froimchuk
Lithium Burning On Stroboscopic Turn Table
Lithium Burning On Stroboscopic Turn Table
Published: 2017/05/06
Channel: Christian Gingras
Lithium Ion battery burns
Lithium Ion battery burns
Published: 2014/08/16
Channel: Greg Pollard
Burning lithium metal in Hydrogen chloride gas
Burning lithium metal in Hydrogen chloride gas
Published: 2016/01/28
Channel: SciencePosts
Burning Lithium Metal
Burning Lithium Metal
Published: 2013/05/01
Channel: Trifaziux
On the burning of Lithium tablets
On the burning of Lithium tablets
Published: 2016/09/01
Channel: Leena Ummikko
Exploding Laptop - Lithium Ion Battery  (Extended Version)
Exploding Laptop - Lithium Ion Battery (Extended Version)
Published: 2013/07/24
Channel: PC Pitstop Video
Burning Lithium
Burning Lithium
Published: 2013/11/23
Channel: Lee Bond
Burning Lithium Metal (Explodes and gives off a bright light)
Burning Lithium Metal (Explodes and gives off a bright light)
Published: 2013/11/15
Channel: Ariel Froimchuk
Burning lithium
Burning lithium
Published: 2012/11/17
Channel: Danada
Burning LITHIUM
Burning LITHIUM
Published: 2014/10/27
Channel: Brain&Force
Lithium Battery Fire - slow motion study
Lithium Battery Fire - slow motion study
Published: 2011/12/12
Channel: TAOFLEDERMAUS
Burning a piece of Lithium
Burning a piece of Lithium
Published: 2010/07/27
Channel: sverthSolaris
Reaction of Lithium with Nitrogen
Reaction of Lithium with Nitrogen
Published: 2016/01/21
Channel: Science Skool
BURNING LITHIUM
BURNING LITHIUM
Published: 2016/03/13
Channel: Stiggers
LiPo battery fire.
LiPo battery fire.
Published: 2014/11/30
Channel: Christian Moeller
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WIKIPEDIA ARTICLE

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Lithium burning is a nucleosynthetic process in which lithium is depleted in a star. Lithium is generally present in brown dwarfs and not in low-mass stars. Stars, which by definition must achieve the high temperature (2.5 × 106 K) necessary for fusing hydrogen, rapidly deplete their lithium. This occurs by a collision of lithium-7 and a proton producing two helium-4 nuclei. The temperature necessary for this reaction is just below the temperature necessary for hydrogen fusion. Convection in low-mass stars ensures that lithium in the whole volume of the star is depleted. Therefore, the presence of the lithium line in a candidate brown dwarf's spectrum is a strong indicator that it is indeed substellar.

From a study of lithium abundances in 53 T Tauri stars, it has been found that lithium depletion varies strongly with size, suggesting that lithium burning by the P-P chain, during the last highly convective and unstable stages during the pre–main sequence later phase of the Hayashi contraction may be one of the main sources of energy for T Tauri stars. Rapid rotation tends to improve mixing and increase the transport of lithium into deeper layers where it is destroyed. T Tauri stars generally increase their rotation rates as they age, through contraction and spin-up, as they conserve angular momentum. This causes an increased rate of lithium loss with age. Lithium burning will also increase with higher temperatures and mass, and will last for at most a little over 100 million years.

The P-P chain for lithium burning is as follows


p
 
6
3
Li
 
→  7
4
Be
  (unstable)
7
4
Be
 

e
 
→  7
3
Li
 

ν

p
 
7
3
Li
 
→  8
4
Be
 
  (unstable)
    8
4
Be
 
→  4
2
He
 
+ energy

It will not occur in stars less than sixty times the mass of Jupiter. In this way, the rate of lithium depletion can be used to calculate the age of the star.

The use of lithium to distinguish candidate brown dwarfs from low-mass stars is commonly referred to as the lithium test. Heavier stars like Sun can retain lithium in their outer atmospheres, which never get hot enough for lithium depletion, but those are distinguishable from brown dwarfs by their size. Brown dwarfs at the high end of their mass range (60–75 MJ) can be hot enough to deplete their lithium when they are young. Dwarfs of mass greater than 65 MJ can burn off their lithium by the time they are half a billion years old, thus this test is not perfect.[1]

References[edit]

  1. ^ Basri, G. (1998). Rafael Rebolo; Eduardo L. Martin; Maria Rosa Zapatero Osorio, eds. The Lithium Test for Young Brown Dwarfs (invited review). Proceedings of a Workshop held in Puerto de la Cruz, Tenerife, Spain, 17–21 March 1997, ASP Conference Series #134. p. 394. Bibcode:1998ASPC..134..394B. 

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