Fission and Fusion of Atomic Nuclei

Slides:

Advertisements

Similar presentations

Section 2: Nuclear Fission and Fusion

Advertisements

7: Atomic and Nuclear Physics 7.3 Nuclear reactions, fission and fusion.

Nuclear Reactions: AN INTRODUCTION TO FISSION & FUSION Farley Visitors Center.

Chapter 25 Nuclear Chemistry 25.3 Fission and Fusion

Section 2Nuclear Changes Nuclear Forces 〉 What holds the nuclei of atoms together? 〉 The stability of a nucleus depends on the nuclear forces that hold.

Nuclear Chemistry Fusion and Fission

Nuclear Fission & Fusion

Nuclear Reactions: AN INTRODUCTION TO FISSION & FUSION Farley Visitors Center.

Unit 2 – The Atom Nuclear Chemistry Fusion and Fission.

Nuclear Fission & Fusion. History: Hahn & Strassman (1939) Bombarded Uranium-235 samples with neutrons expecting the Uranium-235 to capture neutrons Instead,

Unit 8 Section 2: Nuclear Reactions

Section 2Nuclear Changes Section 2: Nuclear Fission and Fusion Preview Key Ideas Bellringer Nuclear Forces Nuclear Fission Chain Reaction Nuclear Fusion.

Unit 2 – The Atom Nuclear Chemistry Fusion and Fission.

 Splitting a large nucleus into two smaller nuclei  Usually begins by bombarding (shooting at) nucleus with a neutron  become unstable  Nucleus split.

Nuclear Fusion D-T Fusion Reactions. Nuclear fusion Nuclear fusion occurs when two light nuclei merge to form a heavier nucleus. The binding energy curve.

Fission and Fusion of Atomic Nuclei. I. Nuclear Fission Fission - The splitting of the nucleus into fragments (division) Uranium-235 is struck by a neutron.

Rāhoroi, 22 Paenga-whāwhā, 2017Rāhoroi, 22 Paenga-whāwhā, 2017

Nuclear Fusion Nuclear Fusion is a process in which two or more smaller nuclei collide and form a new, larger nucleus. In some fusion reactions, a neutron,

Nuclear Reactions Powering the Sun since 4.6 Billion B.C.

ICP 10/2/12 Finish radioactivity. Warmup 1)Which particles are lightest: protons, neutrons, electrons? 2)Which particles are in the nucleus: protons,

For each atom, in its natural state, the number of electrons and the number of protons is equal. This number may or may not be the same as the number.

Three Types of Atomic Nuclear Changes

Fission Lise Meitner- Austrian physicist during time of WWII. Discovered that bombardment of uranium with neutrons can split the nucleus into two pieces.

7.2 Nuclear Fission and Fusion. Nuclear Fission Why are some elements radioactive? There is an optimal ratio of neutrons to protons 1 : 1 for smaller.

In your own words try to explain a radio active decay series

Nuclear Reactions: FISSION & FUSION ã Nuclear reactions deal with interactions between the nuclei of atoms ã Both fission and fusion processes deal with.

Nuclear Reactions Fission and Fusion. FISSION The splitting of an atomic nucleus into 2 smaller particles. Animation.

Nuclear Reactions: AN INTRODUCTION TO FISSION & FUSION Farley Visitors Center.

Section 2Nuclear Changes Section 2: Nuclear Fission and Fusion Preview Key Ideas Bellringer Nuclear Forces Nuclear Fission Chain Reaction Nuclear Fusion.

Nuclear Fission & Fusion. History: Hahn & Strassman (1939) Bombarded Uranium-235 samples with neutrons expecting the Uranium-235 to capture neutrons Instead,

Nuclear Fusion and Fission

Nuclear Fission and Fusion. Nuclear Reactions Nuclear reactions deal with interactions between the nuclei of atoms Both fission and fusion processes deal.

 In nuclear fission, large atoms are split apart to form smaller atoms, releasing energy.  Fission also produces new neutrons when an atom splits. 

Fission and Fusion. Nuclear Reactions Two types of nuclear reactions that release energy.  Fission  Fusion.

AN INTRODUCTION TO FISSION & FUSION

NUCLEAR FISSION A process of splitting of a heavy nucleus into

NUCLEAR FUSION Process of combining two light nuclei to

Nuclear fission: lecture 9.2 B

Fission and Fusion of Atomic Nuclei

AN INTRODUCTION TO FISSION & FUSION

Fusion and Fission.

Aim # 47: How can we obtain energy from the nucleus of an atom?

Chapter 9 Nuclear Radiation

Section 2: Nuclear Fission and Fusion

Nuclear Fusion.

FISSION and FUSION.

Nuclear Chemistry.

Nuclear Stability Nuclear Changes

Fission and Fusion of Atomic Nuclei

Nuclear Energy Fission vs Fusion.

Fission Vs. Fusion.

Unit 11: Nuclear Chemistry

Unit 4 Nuclear Reactions.

NUCLEAR CHEMISTRY Unit 1 Notes.

FISSION and FUSION.

14.4 Nuclear Reactions.

Nuclear Reactions: FISSION & FUSION.

AN INTRODUCTION TO FISSION & FUSION

14.4 Nuclear Reactions.

Nuclear Chemistry.

Big 7 - Chapter 6 Nuclear Reactions.

Can you fully describe the working of a nuclear reactor?

Atomic Structure.

Fission and Fusion.

AN INTRODUCTION TO FISSION & FUSION

AN INTRODUCTION TO FISSION & FUSION

Section 2: Nuclear Fission and Fusion

Topic: Fission and Fusion

Nuclear Energy Nuclear Structure and Radioactivity.

Presentation transcript:

Fission and Fusion of Atomic Nuclei

I. Nuclear Fission Neutron Fission - The splitting of the nucleus into fragments (division) Uranium-235 is struck by a neutron and forms Ba-141, Kr-92 , and additional neutrons.

II. Chain Reaction Chain reaction Nucleus captures a neutron and splits into fragments and produces three neutrons Products start a new reaction Critical mass The minimum mass required to support a self-sustaining chain reaction

III. Nuclear Fusion Fusion - combining atomic nuclei to produce a nucleus of greater mass the nuclei of lighter elements (such as hydrogen) are fused together at extremely high temperatures and pressures to form heavier elements (such as helium) Fusion reactions release more energy than fission reactions Requires extremely high energies to initiate and sustain Sun is powered by fusion

euterium ritium

IV. Nuclear Binding Energy The energy required to break a nucleus into its individual protons and neutrons Energy released in a nuclear reaction is much greater than in chemical reactions

V. Mass Defect The mass of the atom is always less than the sum of the masses of individual parts. Mass defect -The difference in mass between an atom and its (protons, neutrons, and electrons) The difference in mass has been converted to energy The energy can be calculated using E=mc2

VI. Nuclear Reactors The purpose of nuclear reactors is to keep the chain reaction going without letting it get out of control

Diablo Canyon

San Onofre

Fukushima, Japan

VII. Nuclear Bombs Atomic Bomb Hydrogen Bomb Uses fission Uses enriched uranium-235 or plutonium Nagasaki and Hiroshima May 1945 trial run to Trinity (the first atomic bomb tested-plutonium) in New Mexico Uses fission and fusion 1000 time more powerful than atomic bomb Uses deuterium 2H and tritium 3H October 30, 1961, Tsar Bomba in Novaya Zemlya used Lithium for its bomb

Sources www.pennenergy.com http://www.californiareport.org noyonews.net www.sfgate.com enformable.com www.utsandiego.com activerain.com thesportdigest.com www.dailytelegraph.com.au www.2050publications.com