Understanding Neutron Radiography

More documents

Recommendations

Info

Q57. In order to increase the neutron beam intensity: a. the LID could be lowered b. the neutron energy must be increased c. the test specimen should be moved further from the film d. a smaller source size could be used Q58. <strong>Neutron</strong> exposure may be due to: a. the direct beam from the neutron source b. scatter radiation arising from objeCts in the direct beam c. both a and b d. neither a nor b Q59. Gadolinium conversion screens emit: a. gamma rays and conversion electrons b. beta particles only c. alpha particles and positrons d. gamma rays only Charlie Chong/ Fion Zhang
Charlie Chong/ Fion Zhang Practical.NR Chapter 7
Page 1 and 2:
Understanding Neutron Radiography R
Page 3 and 4:
Neutron Source-Cyclotron Charlie Ch
Page 5 and 6:
Charlie Chong/ Fion Zhang
Page 7 and 8:
3. Techniques/Calibrations • Bloc
Page 9 and 10:
Page 11 and 12:
Greek Alphabet Charlie Chong/ Fion
Page 13 and 14:
Page 15 and 16:
Why Neutron Radiography? "finding l
Page 17 and 18:
■ http://minerals.usgs.gov/minera
Page 19 and 20:
Screen Types-1 1. Transfer screen-i
Page 21 and 22:
IVONA TTS Capable. Charlie Chong/ F
Page 23 and 24:
Reading-1 ASNTHBVol4Chapter16 Charl
Page 25 and 26:
FIGURE 1. Electric bridge wire squi
Page 27 and 28:
FIGURE 1. Electric bridge wire squi
Page 29 and 30:
FIGURE 2. Comparison of neutron rad
Page 31 and 32:
User’s Guide Unlike many other fo
Page 33 and 34:
PART 2. Static Radiography with The
Page 35 and 36:
2.2 Neutron Collimation Because the
Page 37 and 38:
The source of thermal neutrons is a
Page 39 and 40:
Parallel & Divergent Collimator - F
Page 41 and 42:
5.1 Neutron cross sections Neutron
Page 43 and 44:
The established direct imaging tech
Page 45 and 46:
FIGURE 4. Neutron radiographs of nu
Page 47 and 48:
FIGURE 4. Neutron radiographs of nu
Page 49 and 50:
ASTM E803 - 91(2013) Standard Test
Page 51 and 52:
FIGURE 5. Representative neutron ra
Page 53 and 54:
Another reactor that has provided n
Page 55 and 56:
FIGURE 7. Hot cell fuel inspection
Page 57 and 58:
Hot cell Shielded nuclear radiation
Page 59 and 60:
Applications: Hot cells are used to
Page 61 and 62:
Hot Cell Charlie Chong/ Fion Zhang
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
FIGURE 8. Cross section showing van
Page 71 and 72:
FIGURE 9. Components of mobile deut
Page 73 and 74:
FIGURE 10. Californium-252 sources
Page 75 and 76:
FIGURE 11. Elevation of subcritical
Page 77 and 78:
Californium-252 Neutron Source Char
Page 79 and 80:
PART 3. Special Techniques of Neutr
Page 81 and 82:
Other reactor centers have develope
Page 83 and 84:
Page 85 and 86:
TABLE 2. Relative neutron attenuati
Page 87 and 88:
FIGURE 14. Neutron radiographs of e
Page 89 and 90:
The technique can provide high sens
Page 91 and 92:
3.5 Neutron Gaging and Neutron Prob
Page 93 and 94:
3.6 Closing Industry standards have
Page 95 and 96:
Reading-2 ASNTNRTMQA123 Level-I Cha
Page 97 and 98:
Level 1 Answers Neutron Radiographi
Page 99 and 100:
Q1. Neutron penetration is greatest
Page 101 and 102:
Q6. Many of the absorption differen
Page 103 and 104:
Q11. Gadolinium conversion screens
Page 105 and 106:
The neutrons transmitted through a
Page 107 and 108:
Q20. For inspection of radioactive
Page 109 and 110:
Q24. A graph showing the relationsh
Page 111 and 112:
Q30. Which of the following materia
Page 113 and 114:
Q34. Movement, geometry, and screen
Page 115 and 116:
Q39. An Image Quality Indicator is
Page 117 and 118:
TABLE 6. Properties of Some Thermal
Page 119 and 120:
Charlie Chong/ Fion Zhang Practical
Page 121 and 122:
Q45. In the converter screen techni
Page 123 and 124:
Charlie Chong/ Fion Zhang Practical
Page 125 and 126:
Q50. The primary advantage of using
Page 127 and 128:
More Reading- before going further!
Page 129 and 130:
7. IMAGE RECORDERS The neutron radi
Page 131 and 132:
7.1. PHOTOGRAPHIC FILM 7.1.1. Conve
Page 133 and 134: TABLE 7.1. Nuclear properties of ne
Page 135 and 136: TABLE 7.2. Transmittance and film d
Page 137 and 138: However, the shape of the curves fo
Page 139 and 140: 7.1.4. Film contrast. In discussing
Page 141 and 142: Figure 7.1. Characteristic curve of
Page 143 and 144: The slope of a curve at a particula
Page 145 and 146: Figure 7.3. Characteristic curve of
Page 147 and 148: 7.1.5. Film sensitivity (film speed
Page 149 and 150: TABLE 7.3. Approximate comparison o
Page 151 and 152: Figure 7.4. Typical signal-exposure
Page 153 and 154: Close inspection of the gadolinium
Page 155 and 156: TABLE 7.4. The characteristics of s
Page 157 and 158: To make an informed choice of imagi
Page 159 and 160: TADLE 7.5. Some characlcrislics of
Page 161 and 162: TADLE 7.8. Average exposure data fo
Page 163 and 164: where E is the electronic fluence c
Page 165 and 166: 7.2. NITROCELLULOSE FILM 7.2.1. Fil
Page 167 and 168: In relation to thermal NR, the foll
Page 169 and 170: 7.2.2. Film handling and safety pre
Page 171 and 172: Following recommendations and regul
Page 173 and 174: 7.2.3. Exposure techniques and moun
Page 175 and 176: TABLE 7.9. Neutron fluences for nit
Page 177 and 178: The multifoil technique in fast NR
Page 179 and 180: The image generation in silver-hali
Page 181 and 182: Q51. Neutron beams used in nondestr
Page 183: Q56. High-resolution gadolinium con
Page 187 and 188: Q61. Which element is commonly used
Page 189 and 190: Q63. Lead is: a. a good neutron shi
Page 191 and 192: 69. The emulsion side of a single-c
Page 193 and 194: 72. Single-emulsion high-resolution
Page 195 and 196: 77. Frilling 皱边 , 脱模 or l
Page 197 and 198: 81. When manually processing films,
Page 199 and 200: 85. Water spots on films can be min
Page 201 and 202: 89. An advantage of the fountain-pe
Page 203 and 204: 91. The average thermal neutron flu
Page 205 and 206: 96. Overexposure to neutron or gamm
Page 207 and 208: 100. The intensity of gamma rays is
Page 209 and 210: Q106. To achieve uniformity in neut
Page 211 and 212: TABLE 6. Properties of Some Thermal
Page 213 and 214: 111. A main disadvantage of gadolin
Page 215 and 216: 115. To an Operational Health Physi
Page 217 and 218: The neutrons transmitted through a
Page 219 and 220: Peach - 我爱桃子 Charlie Cho
Page 221 and 222: Good Luck Charlie Chong/ Fion Zhang
show all

Understanding Neutron Radiography

Create successful ePaper yourself

Delete template?

Save as template?