2. Nuclear Fusion

3. 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, proton, or beta particle can be emitted. In fusion of lighter nuclei, energy is always released.

4. 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, proton, or beta particle can be emitted. In fusion of lighter nuclei, energy is always released.

5. 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, proton, or beta particle can be emitted. In fusion of lighter nuclei, energy is always released.

6. n p n n p Deuterium Tritium Hydrogen-2 Hydrogen-3

7. n p n n p Deuterium Tritium Hydrogen-2 Hydrogen-3

8. n p n n p

9. n p n n p

10. n p n n p

11. n p n n p

12. n p n p n Energy

13. n p n p n

14. n p n p n A helium-4 nucleus

15. n p n p n Energy A helium-4 nucleus

16. n p n p n Energy A helium-4 nucleus

17. n p n p n Energy A neutron

18. n p n p n Energy A neutron

19. n p n p n Energy

20. n p n p n

21. n p n p n

22. n p n n p Deuterium Tritium Hydrogen-2 Hydrogen-3 +

23. n p n n p Deuterium Tritium Hydrogen-2 Hydrogen-3 +

24. n p n n p + + n p n p n + + Energy

25. n p n n p + + n p n p n + +

26. n p n n p + n p n p n + + +

27. n p n n p + + n p n p n + +

28. n p n n p + n p n p n + + +

29. n p n n p + + n p n p n + +

30. n p n n p + n p n p n + + 2p 3n +

31. n p n n p + + n p n p n + + Energy 2p 3n

32. n p n n p + + n p n p n + + Energy Total charge = 1+1 = +2

33. n p n n p + + n p n p n + + Energy Total charge = 2+0 = +2 Total charge = 1+1 = +2

34. n p n n p + + n p n p n + + Energy Total mass = 2 + 3 = 5

35. n p n n p + + n p n p n + + Energy Total mass = 2 + 3 = 5 Total mass = 4 + 1 = 5

36. n p n n p +

37. n p n n p

38. n + n n +

39. n + n n + Repulsive Force

40. n + n n + High KE

41. n + n n + Repulsive Force High KE Extremely high temperatures: 100 million-200 million ° C

42. n + n n + Repulsive Force High KE Extremely high temperatures: 100 million-200 million ° C

43. n + n n + The strong nuclear force holds these protons together

44. Fusion Reactions in the Sun

58. Fusion Reactions in Stars

63. The remnants of a supernova Heavier elements are formed by an exploding star, called a supernova. Here, the energy is high enough to allow larger nuclei to fuse together.

64. The remnants of a supernova Heavier elements are formed by an exploding star, called a supernova. Here, the energy is high enough to allow larger nuclei to fuse together.

65. Fusion as a Power Source Scientists have known about nuclear fusion since the early 1930’s. Their goal is to someday use controlled fusion as a way of producing power. However, extremely high temperatures are required and it is very hard to contain the mixture of fusing elements called plasma. So fusion reactors are not yet a practical source of power, but people are hopeful that some day it will be.

66. Fusion as a Power Source Scientists have known about nuclear fusion since the early 1930’s. Their goal is to someday use controlled fusion as a way of producing power. However, extremely high temperatures are required and it is very hard to contain the mixture of fusing elements called plasma. So fusion reactors are not yet a practical source of power, but people are hopeful that some day it will be.

67. Fusion as a Power Source Scientists have known about nuclear fusion since the early 1930’s. Their goal is to someday use controlled fusion as a way of producing power. However, extremely high temperatures are required and it is very hard to contain the mixture of fusing elements called plasma. So fusion reactors are not yet a practical source of power, but people are hopeful that some day it will be.

68. Fusion as a Power Source Scientists have known about nuclear fusion since the early 1930’s. Their goal is to someday use controlled fusion as a way of producing power. However, extremely high temperatures are required and it is very hard to contain the mixture of fusing elements called plasma. So fusion reactors are not yet a practical source of power, but people are hopeful that some day they will be.