Pp chain
The proton–proton chain reaction is one of several fusion reactions by which stars convert hydrogen to helium, the primary alternative being the CNO cycle. The proton–proton chain dominates in stars the size of the Sun or smaller.[citation needed]
In general, proton–proton fusion can occur only if the temperature (i.e. kinetic energy) of the protons is high enough to overcome their mutual electrostatic or Coulomb repulsion.
In the Sun, deuterium-producing events are so rare (diprotons, the much more common result of nuclear reactions within the star, immediately decay back into two protons) that a complete conversion of the star's hydrogen would take more than 1010 (ten billion) years at the prevailing conditions of its core. The fact that the Sun is still shining is due to the slow nature of this reaction; if it went more quickly, the Sun would have exhausted its hydrogen long ago.

This is an excerpt from the article Pp chain from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
The article Pp chain at en.wikipedia.org was accessed 86 times in the last 30 days. (as of: 07/08/2013)
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Proton-proton fusion
The latter of these reactions is part of what is usually called the proton-proton cycle, which yields about 25 MeV and can be combined to the form ...
hyperphysics.phy-astr.gsu.edu/hbase/astro/procyc.html
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Proton–proton chain reaction - Wikipedia, the free encyclopedia
The proton–proton chain reaction is one of several fusion reactions by which stars convert hydrogen to helium, the primary alternative being the CNO cycle.
en.wikipedia.org/wiki/Proton%E2%80%93proton_chain_reaction
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The Proton-Proton Chain
The Proton-Proton or Pp chain, which is important in stars the mass of the Sun and less ... We discuss the Pp chain in this section and the CNO cycle in the next.
csep10.phys.utk.edu/astr162/lect/energy/ppchain.html
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The Proton-Proton Chain
The process is called the Proton-Proton (PP) Chain, and it operates inside the Sun and stars of similar mass. Step 1: Smash two protons together to make ...
burro.astr.cwru.edu/Academics/Astr221/StarPhys/ppchain.html
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Proton-proton chain reaction
The proton–proton chain reaction is one of several fusion reactions by which stars convert hydrogen to helium, the primary alternative being the CNO cycle.
www.princeton.edu/~achaney/tmve/wiki100k/docs/Proton-proton_chain_reaction.html
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2 Stellar Energy Generation – PP-chain physics
2 Stellar Energy Generation – PP-chain physics. 2.1 The PPI chain and energetics. Figure 3 shows the main sequences by which hydrogen nuclei ( protons) are.
zebu.uoregon.edu/~rayfrey/321/lecture5.pdf
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p-p chain - Nobelprize.org
p-p reaction. pp2-reaction. pp3. In theoretical models of the sun, the p—p chain of nuclear reactions illustrated here is the dominant source of energy production.
www.nobelprize.org/nobel_prizes/themes/physics/fusion/sun_pp-chain.html
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Proton-Proton chain
Proton-Proton Chain. (NOTE: It is important to remember that not all collisions result in a reaction taking place. If the energies and/or orientation of the particles ...
aether.lbl.gov/www/tour/elements/stellar/pp.html
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Proton-Proton Animation - UNL Astronomy
Shows an animated diagram of the proton-proton chain reaction, which is the dominant fusion reaction in the sun's core. UNL Astronomy / ClassAction. / Sun and ...
astro.unl.edu/classaction/animations/sunsolarenergy/fusion01.html
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PROTON-PROTON CHAIN - James E. Neff
1. Lec #33: 9 November 2011. Chapter 6.1, .2, .5. Energy Generation Within Stars : ✓ Nuclear Physics Basics. •. Fusion. •. PP, CNO, and Triple-Alpha Processes.
neffj.people.cofc.edu/ASTR311/Notes/lec33.pdf
Search results for "Pp chain"
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Pp chain in science
Proton-proton fusion
The latter of these reactions is part of what is usually called the proton-proton cycle, which yields about 25 MeV and can be combined to the form ...
[PDF]Solar fusion cross sections II: the pp chain and CNO cycles - arXiv
Department of Physics and Astronomy, Texas A&M University, Commerce, TX 75429 USA .... thus that the Pp chain for 4He synthesis would have addi-.
[PDF]Solar fusion cross sections. II. The pp chain and CNO cycles
Apr 12, 2011 ... Department of Physics and Astronomy, Texas A&M University, .... $1000 times larger than expected, and thus that the Pp chain for 4He ...
Proton–proton chain reaction - Wikipedia, the free encyclopedia
The proton–proton chain reaction dominates in stars the size of the Sun or smaller. .... Evolution and Nucleosynthesis, The University of Chicago Press, 1983, p.
Nuclear Reactions - Center for Astrophysics & Space Sciences
Apr 16, 1999 ... University of California, San Diego ... The Proton-Proton Chain is the principal set of reactions for solar-type stars to transform hydrogen to ...
Solar fusion cross sections. II. The pp chain and CNO cycles - Surrey ...
Dec 3, 2011 ... The Pp chain and CNO cycles REVIEWS OF MODERN PHYSICS, 83 (1). ... The University of Surrey, Guildford, Surrey, GU2 7XH, United ...
Solar fusion cross sections. II. The pp chain and CNO cycles - NASA ...
The Pp chain and CNO cycles ... AA(Department of Physics and Center for Experimental Nuclear Physics and Astrophysics, University of Washington, Seattle, ...
AccessScience | Encyclopedia Article | Proton-proton chain
Completion of a chain results in the consumption of four protons (hydrogen-1 ... Georgeanne R. Caughlan, Department of Physics, Montana State University ...
proton-proton chain concept from the Astronomy knowledge base
has minimum temperature 107 K, has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of. has synonym p-p chain, 2001-09-27 ...
[PDF]The Proton-Proton Chain: An Energy Solution - Orlando Chapter STC
of the proton-proton chain can be achieved at temperatures less then 1 million Kelvin, but the .... Super-Kamiokande at the University of California, Irvine.
Books on the term Pp chain
Introduction to Stellar Astrophysics: Stellar structure and evolution
Introduction to Stellar Astrophysics: Stellar structure and evolution
Erika Böhm-Vitense, 1989
For M dwarfs, i.e. cool stars, the energy generation is mainly due to the Pp chain. For the sun both the PP and the CNO cycles contribute, but the Pp chain is more important. For Sirius A, an A0 V star with reff ~ 10 000 K the CNO cycle is more ...
Advanced Materials '93: Computations, Glassy Materials, ...
Advanced Materials '93: Computations, Glassy Materials, ...
T Matsumoto, 1995
MODEL Crystal structures of PP, PVCH, and P3MBI are built on the basis of experimental data“. They are first built as assembly of infinite chain molecule with periodic boundary conditions (PBC), and optimized by molecular mechanics (MM ) ...
Stereoselective Polymerization with Single-Site Catalysts
Stereoselective Polymerization with Single-Site Catalysts
Lisa S. Baugh, Jo Ann M. Canich, 2010
α β Me β-Me L 2 M PP transfer Pp chain end (iv) + H + H C3 + H L2M Me Pp chain start (v) SCHEME 10.2 β-Methyl group chain transfer reaction. Pp chain transfer toAl Me + PP L2M Me Al + Me C3 O2/H2O PP HO + Pp chain end Chain start ...
Thermal oxidation of polymer blends [electronic resource]
Thermal oxidation of polymer blends [electronic resource]
L. S. Shibryaeva, A. a. Popov, Gennadiĭ Efremovich Zaikov, 2006
The change of rotary-isomer composition of Pp chain in blend with SEPTR accompanying by the increase of content of short sections in spiral conformation is actually observed by IR-spectroscopy method. This fact follows from the decrease of ...
Neutrino Astrophysics
Neutrino Astrophysics
1989
3.3 The Pp chain A The principal reactions Table 3.1 summarizes the principal nuclear reactions that are important in main sequence stars like the Sun, the proton-proton chain (or Pp chain). Alternative nuclear reactions are unimportant under ...
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Blog posts on the term
Pp chain
Natural Phenomena explained in Simple words : Comparision between PP chain and CNO cycle
The amount of energy released from the Pp chain and CNO cycle are dependent on the temperature of the core of the star. At a temperature both reactions release equal amount of energy.
naturesexplained.blogspot.com/2013/06/comparision-between-pp-chain-and-cno.html
Research on Real-Time Localization and Environmental Monitoring Using Sensors and ZigBee for Cold Chain System
International Journal of Distributed Sensor Networks focuses on applied research and applications of sensor networks. A large number of important applications depend on sensor networks interfacing with the real world. These applications include medical, military, manufacturing, transportation, safety and environmental planning systems. Many have been difficult to realize because of problems involved with inputting data from sensors directly in to automated systems. Sensor fusion in the context of distributed sensor networks has emerged as the method of choice for resolving these problems.
www.hindawi.com/journals/ijdsn/2013/463917/
Nuclear Reactions | The Quantum Red Pill Blog
My learning notes (by Luis Martínez)
quantumredpill.wordpress.com/2013/03/27/nuclear-reactions/
Poem - I GETS NO....(PART 3) PP CHAIN POEM | GS Poetry
gspoetry.com/IzMyTurn06/poems/i-gets-nopart-3-pp-chain-poem
From The Archives: Why Does Multiple Myeloma Treat The Kidneys So Poorly? | Clinical Correlations
Please enjoy this post from the Archives dated September 22, 2010 By Jon Emile Kenny, MD Faculty Peer Reviewed “You mean I’ve got cancer and m...
www.clinicalcorrelations.org/?p=6232
Poem - Power To The Poets (PP Chain Poem) [3] | GS Poetry
gspoetry.com/MissJesz/poems/power-to-the-poets-pp-chain-poem-3
LOSING IT WITH WW: Chain stores low pp food
 Products that can be found in stores like Dunnes, Tesco etc. .
glolosingit.blogspot.com/2013/05/products-that-can-be-found-in-stores.html
Production Order Status---english version - jefflu99 - 博客园
www.cnblogs.com/jefflu2012/p/3185142.html
Stellar Evolution #2 – Main Sequence | Astrophysics UK
Astronomy, Physics, Cosmology and Atheism
astrophysicsuk.wordpress.com/2013/05/10/stellar-evolution-2-main-sequence/
Rev. Mod. Phys. 83, 195 (2011): Solar fusion cross sections. II. The pp chain and CNO cycles
link.aps.org/doi/10.1103/RevModPhys.83.195
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