Quarks and strong force strong force 10 15
- Slides: 40
夸克子與強作用力 Quarks and strong force
夸克子與強作用力 • 強作用力(strong force): 四種基本力之一 短程 (~10 -15 m),強(重<< 弱< 電磁< 強) 偶合常數: 10 -40 10 -5 10 -2 coupling constant 1 • 主控核粒子nucleons(及所有強子hadrons) 之相互作用 如質子protons,中子neutrons, 介子mesons,K介子, 粒子‧‧‧‧ Ref. : Serway, Moses, Moyer, ‘Modern Physics’ (Saunders College Publishing, 1996) D. H. Perkins, ‘Introduction to High Energy Physics’ (Addison-Wesley, 1982)
Murray Gell-Mann Nobel Prize in Physics 1969 ‘for his contributions and discoveries concerning the classification of elementary particles and their interactions’ http: //www. nobel. se/physics/laureates/1969/
強子 hadrons g b 重子 baryons r 介子 mesons r r
夸克子之禁閉 (quark confinement)
高能電子-核粒子散射實驗 deep-inelastic electron-nucleon scattering
史丹福線性粒子 加速器 Stanford Linear Accelerator SLAC 3 km Photos Courtesy Stanford Linear Accelerator Center. www. slac. stanford. edu/
J. Friedman R. Taylor H. Kendall Nobel Prize in Physics 1990 “for their pioneering investigations concerning deep inelastic scattering of electrons on protons and bound neutrons, which have been of essential importance for the development of the quark model in particle physics. ” Photo courtesy SLAC http: //www 2. slac. stanford. edu/vvc/nobel/1990 nobel. html
Figures courtesy Brookhaven National Lab http: //www. bnl. gov/RHIC/
~1 km Relativistic Heavy Ion Collider Brookhaven National Lab, NY 實驗於 2000年開始 重離子(至鈾)加速至 200 Ge. V/n (v=0. 99995 c)對撞, 於極短時間達至 1012 K,重塑宇宙初開狀況。 Figures courtesy Brookhaven National Lab http: //www. bnl. gov/RHIC/
粒子加速管道 Photo downloaded from http: //www. bnl. gov/rhic/fascinating. htm 其中之一個粒 子探測器 STAR Photo downloaded from http: //www. star. bnl. gov/
Au on Au Downloaded from Brookhaven National Lab webpage http: //www. bnl. gov/rhic/fascinating. htm
A real event in one of the detectors Downloaded from Brookhaven National Lab webpage http: //www. bnl. gov/rhic/full_en_images. htm
SN 1987 A 超新星 1987 A M 1 蟹狀星雲 Crab Nebula Pulsar/compact star Photo courtesy Anglo-Australian Observatory Animation courtesy NASA/CXC/ASU/J. Hester et al. downloaded from http: //chandra. nasa. gov/ Chandra X-ray Photo courtesy NOAO HST
~50 km Photo credit: NASA http: //www. fourmilab. ch/earthview/vplanet. html
RXJ 1856. 5 -3754 可見光 X-ray Chandra/NASA Credit: European Southern Observatory Very Large Telescope R~11. 3 km 太小! Photos courtesy NASA/CXC/SAO downloaded from http: //chandra. harvard. edu/press/kits/strangematter/index. html
3 C 58 SN 1181 遺下之 致密星 表面溫度 < 106 K 太冷! Chandra X-ray Photo courtesy NASA/CXC/SAO http: //www 1. msfc. nasa. gov/NEWSROOM/news/releases/2002/02 -082. html
- Be strong be strong be strong in the lord
- Quarks chaos and christianity
- Quark types
- Quarks for dummies
- 6 types of quarks
- Große stärke die man kleinsten teilchen entlockt
- Gesichtsblindheit selbsttest
- Quark matter
- Quarks
- Color quarks
- Proton neutron quarks
- Quarks
- Proton neutron quarks
- Quarks regina
- How to remember strong acids and strong bases
- Strong acid titration curve
- Net ionic equation titration
- Half equivalence point
- How to read a titration curve
- Strong base
- Strong vs weak nuclear force
- Centripetal force and gravitational force
- Normal force and gravitational force
- Internal forces
- Which force is a noncontact force?
- What force provides centripetal force
- Long range force vs contact force
- If you whirl a tin can on the end of a string
- The ratio of resistance force to effort force
- Unbalanced force
- Centrifugal forces geography
- Air resistance contact or non contact
- Why electric field is conservative
- N thi
- What are weak syllables
- Normal adjectives and strong adjectives
- Strong acids and bases
- Difference between strong and weak semaphore in os
- Self ionisation of water
- Carboxylic acid and strong base reaction
- Concentration of weak acid