Particles And Radiation Flashcards

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1
Q

What force do hardons experience

A

Strong nuclear force

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2
Q

What are hadrons formed by

A

Quarks

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3
Q

What makes up a baryon

A

3 quarks and 3 anti quarks

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4
Q

What are mesons made up of

A

A quark and anti quark pair

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5
Q

What are leptons

A

Fundamental particles that don’t experience the SNF

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6
Q

What are unstable nuclei

A

Particles which have too many either protons neutrons or both, the SNF can’t keep them stable and they will decay

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7
Q

Where does alpha decay take place

A

In large nuclei with too many protons and neutrons

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8
Q

Where does beta minus decay take place

A

In nuclei which have too many neutrons

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9
Q

What happens in beta minus decay

A

A neutron turns into a proton

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10
Q

What is annihilation

A

When particles collides with their corresponding anti particle

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11
Q

What does annihilation result in

A

Masses of the particle and anti particle being converted into the energy form of 2 gamma ray photons moving in opposite directions

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12
Q

What does annihilation result in

A

Masses of the particle and anti particle being converted into the energy form of 2 gamma ray photons moving in opposite directions

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13
Q

What is pair production

A

When a high energy photon is converted into a particle, anti particle pair. Excess energy is converted to KE of the particles

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14
Q

What are the three exchange particles

A

Gluon
W boson
Virtual photon

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15
Q

Where does the gluon act

A

Strong force

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16
Q

Where does the boson act

A

Weak force

17
Q

Where does the virtual photon act

A

Electromagnetic force

18
Q

What properties must be conserved in interactions

A

Charge
Baryon number
Lepton number
Energy and momentum
Strangeness (only in strong interaction)

19
Q

What is the equation for specific charge

A

Q/m
Q = charge
m = mass

20
Q

What is the value for 1 eV

A

1.6 x 10^-19

21
Q

What is the equation for stopping potential

A

Ek(max) = eVs

22
Q

What is the equation for pair production

A

Emin = 2E0

23
Q

What is the equation for annihilation

A

Emin = E0

24
Q

What is work function

A

The minimum amount of energy needed to release an electron from the surface of a metal

25
Q

What is the equation for work function

A

Work function = hf0

26
Q

What is the symbol used for threshold frequency

A

f0

27
Q

What is the symbol for work function

A

Phi
Φ

28
Q

What is Plancks constant

A

h = 6.63 x 10^-34 Js

29
Q

What is lambda

A

Wavelength