Understanding Neutron Radiography

More documents

Recommendations

Info

Q4. Generally, the attenuation of neutrons by a given material is: a. reported to the Atomic Energy Commission b. greater for fast neutrons than thermal neutrons c. an indication of the quality of the X-radiographic technique d. appreciably greater for thermal and epithermal neutrons than for fast neutrons Q5. The mass absorption coefficients for thermal neutrons when plotted against regularly increasing atomic numbers of periodic elements presents a: a. blurred picture b. regularly increasing picture c. random picture d. dark picture Charlie Chong/ Fion Zhang
Q6. Many of the absorption differences between neutrons and X-rays indicate clearly that the two techniques: a. cause radiation problems b. complement each other c. increase exposure speed d. fog radiographic film Q7. The neutron cross section is the term normally used to denote: a. the danger in handling radioactive material b. the absorbing power of a material for neutrons c. the atomic number of neutron reactor material d. radiation detection equipment Q8. The sharpness of the outline in the image of the radiograph is a measure of: a. subject contrast b. radiographic definition c. radiographic contrast d. film contrast Charlie Chong/ Fion Zhang
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 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: Charlie Chong/ Fion Zhang
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: Q1. Neutron penetration is greatest
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 and 184:
Q56. High-resolution gadolinium con
Page 185 and 186:
Charlie Chong/ Fion Zhang Practical
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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?