Druck-Materie 20b.qxd - JUWEL - Forschungszentrum Jülich

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Table 1. Data of irradiation of methane samples No. of experi -ment date time of irradiation (hours) shape & size of a sample, (mm) 134 mass (g) T irradiation min/max (K) T12 (before/after burps), (K) comments 1 13.11.01 6.0 a layer, 1.0 1.0 21.6/21.8 32/36 slow burp 2 15.11.01 6.0 a layer, 2.2 2.0 21.6/22.0 33.0/58.0 induced 3a 16.11.01 6.0 a layer, 0.28 0.3 21.6 – no burp 3b 16.11.01 6.0 the same sample 0.3 21.6 31.0/55.7 induced 4 16.11.01 4.0 segment, 4.6 0.6 21.6/23.0 – no burp 5 20.11.01 6.0 segment, 7.5 1.2 22.0/25.0 31.0/56.0 induced 6 21.11.01 14.5 a layer, 0.28 0.3 21.6 – slow burp 7 22.11.01 3.0 a layer, 1.3 1.3 10.0 24.0/56.0 induced 11 12.12.01 10 segment, 9.0 1.5 21.0/26.0 32.0/60.0 induced 12 12.12.01 10 the same sample 1.5 65/70 – measurement of H2 release 13 13.12.01 4.25 segment, 4.6 0.6 15/17 32/50 induced 14 13.12.01 4.17 the same 0.6 18.0/20.0 28.0/56.0 induced 15 13.12.01 3.0 the same 0.6 21.0/23.0 – no burp 16 13.12.01 3.0 the same 0.6 24.0/26.0 – no burp 17 13.12.01 6.0 the same 0.6 24.0/26.0 32/59 Induced 18 14.02.01 8.3 segment, 4.6 0.6 15.0/18.0 22.0/66.0 Induced 19 15.01.02 11.0 segment, 4.6 0.6 15.0/18.0 26/68.5 Induced 20 21.01.02 4.5 a layer, 1.3 1.3 11.0/13.0 – no burp 21 22.01.02 20.0 a layer, 1.3 1.3 – 35.0/57.0 variable temperature (18- 24 K) 22 24.01.02 8.5 a layer, 1.3 1.3 25.0/26.0 35.0/47.0 Induced 23 25.01.02 11.9 segment, 14.3 3.3 19.0/28.0 30.0/67.0 Induced 47 19.03.02 22 a layer, 1.5 1.5 21.5 26.7/71.3 Induced 48 21.03.02 10 1.5 21.5 27.6/62.7 Induced 2.14 22.01.03 11.12 a layer, 5.0 4.17 20-23 27/73 Spontan. 2.15 11.02.03 26.0 a layer, 2.8 2.6 20-21 30/87 Induced
Table 2. Data of irradiation of ice and hydrate samples No. of experi -ment date time of irrad. (hours) T (K) irradiation min/max 135 sample T8/T12 (K) ignition T12, max 24 12.02.02 5 21/23.5 hemisphere ice – 160 comments spontaneous burp 25 12.02.02 10.4 30/32 – // – – 187.4 spontaneous 26 13.02.02 12.23 40/42.6 – // – 51/56 174.3 27 13.02.02 4 30/33 – // – 43.5/- 137.9 sample melted 28 14.02.02 7 31/32 – // – 39.5/46.2 167.7 29 14.02.02 5.33 17/20 – // – 23.5/25.2 169.2 35 18.02.02 9.0 20/25 – // – – 192.7 spontaneous 36 19.02.02 9.75 24/29 – // – – 192 spontaneous 37 19.02.02 15.0 34/37 – // – 44.6/47.7 196 sample melted 30 14.02.02 10.0 25/28 segment 7.5 mm, ice 2.2 g 32/35 194 31 15.02.02 11.0 20/23 – // – 26.3/26.6 193.2 new sample 32 16.02.02 3.0 20/23 – // – 28.6/34.3 134.5 33 16.02.02 5.0 39/41.4 – // – 51.5/57.5 140.7 34 16.02.02 3.33 40/41 – // – – 61 no burp 41 12.03.02 10.5 19/23.5 – // – – 191.5 spontaneous 42 13.03.02 5.3 22/27 – // – 32.3/35.1 159.1 43 13.03.02 5.0 35/37 – // – 45.7/50.3 140.1 2.5(1) 03.12.02 6.25 25.1/26.1 Segment 8.3 mm, ice 2.5 g 25.7/28.9 155.7 spontaneous 2.5(2) 04.12.02 8.62 25/26 – // – 25.5/29.6 167.4 spontaneous 2.5(3) 04.12.02 7.48 24.4/27.4 – // – 26/30 161 spontaneous 2.10 11.12.02 19.67 24.5/26.5 Segment.3 mm ice (0.4 g) 24.3/26.9 127.1 spontaneous 38 20.02.02 12.8 26/29.4 ice beads d=5mm, in Ar 32.5/33.5 80 9 4.12.01 12.0 27/34 – // – – – no burp 52 21.05.02 5.75 19/24 – // – ? ? 39 21.02.02 4.16 20/26.9 hemisphere THF hydrate – /30 96.9 slow burp 40 21.02.02 14.5 20/29.3 – // – 29/31 169 44 14.03.02 12.91 20.4/29.6 – // – – 160.0 spontaneous 45 14.03.02 7.0 30.4/38 – // – 60÷64 ~126 slow burp 49 14.05.02 5.25 20/25 methane hydrate beads in Ar – 61.0 slow burp 50 16.05.02 13.0 20/25 – // – - 81 spontaneous 51 17.05.02 24 30/35 – // – ? 142 53 23.05.02 21.15 25/29 – // – 30/30 82.4 a few argon near T12
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ACoM - 6 6th 6 International Worksh
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Forschungszentrum Jülich GmbH Inst
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Preface These are the Proceedings o
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List of participants, cont’d. Kü
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Pepe M. 43 Petriw S. 43 Picton D.J.
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Experimental background, results an
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• Light water ice as H(H2O) at T
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In Table 2 a survey is given about
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sigma-T in barns/molecule Figure 4.
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2.3 Liquid water Compared to the so
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presented. The corresponding experi
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3.2 Gaseous hydrogen and deuterium
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Rho(Omega) normalised 160 140 120 1
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elatively free and can also suffer
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Figure 16. Heat Capacity for Solid
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o-D2 and p-H2 at 5K for an ucn ener
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Figure 22. UCN Upscattering Rates i
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ho(omega) normalised 40 35 30 25 20
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derived from Walker [52]. The neutr
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Since there is only a small gain of
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7. CALCULATION OF SCATTERING LAW DA
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For the validation of these data se
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[36] Nielsen, M.: Phonons in Solid
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2. THE CASE OF MOLECULAR SOLIDS An
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γ r ( 0) ≅ 2 2 2 T erf e ( ) / 2
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4. PRELIMINARY APPLICATION Solid Me
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[5] Meeting on Moderator Concepts a
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state. Conversely, the monatomic hy
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Note that the equilibrium trihydrog
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para hydrogen system under irradiat
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[12] T. E. Fessler and J. W. Blue,
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tion of neutron intensities, partic
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varied between calculations but the
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5. THE OPTIMISATION OF MULTIPLY GRO
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Figure 7. A comparison of time dist
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4.8 cm hydrogen slab in front of a
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ACoM - 6 6 th Meeting of the Collab
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the moderator is annealed every 12
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The method requires two additional
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ABSTRACT ACoM - 6 6 th Meeting of t
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Heat transfer processes across phas
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3. TWO-PHASE FLOW PATTERN IN THE MO
Page 87 and 88: continuous phase dominating, and a
Page 89 and 90: Also the velocity pattern has chang
Page 91 and 92: Figure 8. Methane pellets concentra
Page 93 and 94: ACoM - 6 6 th Meeting of the Collab
Page 95 and 96: sample volume and the nominal densi
Page 97 and 98: The results presented in this paper
Page 99: Table 10. Summary of energy transfe
Page 102 and 103: 2. EXPERIMENTAL Methane hydrate was
Page 104 and 105: Figure 4. Energy levels of methane
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Page 108 and 109: phase transitions from phase II to
Page 110 and 111: After melting phase I in the cryost
Page 112 and 113: 4. SOLID PHASES OF MESITYLENE-D0 AN
Page 114 and 115: G(ν) [a.u.] 8 6 4 2 Phase II Phase
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Page 118 and 119: A not quite as perfect cold spectru
Page 120 and 121: 2.2 Inelastic neutron scattering Th
Page 122 and 123: Figure 4. Inelastic spectra at the
Page 124 and 125: 3.2 Moderator performance The resul
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Page 128 and 129: Figure 2. The methane pelletizer, m
Page 130 and 131: Figure 5. The cryogenic hopper fill
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Page 134 and 135: ture
Page 136 and 137: The charging device scheme could be
Page 140 and 141: 5. METHODS OF PROCESSING OF RAW EXP
Page 142 and 143: of radicals, that is, before a burp
Page 144 and 145: 6.2 Condition for thermally stimula
Page 146 and 147: Table 4. Estimated values of an ene
Page 148 and 149: • Nine spontaneous burps were obs
Page 150 and 151: APPENDIX Some useful relations and
Page 152 and 153: APPENDIX. Graphs of burps. 148
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Page 160 and 161: 2. EXPERIMENTAL SETUP Fig. 1 will g
Page 162 and 163: All these parameters are kept const
Page 164 and 165: 4. CONCLUSIONS We demonstrated that
Page 166 and 167: JESSICA (Juelich Experimental Spall
Page 168 and 169: The moderator system consists of th
Page 170 and 171: to change the temperatures and to p
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Page 174 and 175: supplied from the high pressure bom
Page 176 and 177: 10 9 10 8 10 7 10 6 Para35%[Experim
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Page 180 and 181: 2. TIME OF FLIGHT SPECTRA AND ENERG
Page 182 and 183: When applying this transformation t
Page 184 and 185: data were analyzed in more detail.
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First of all, we should conclude th
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The equation (a) may also describe
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Even at h=0.01 mm which is too smal
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model and some consequences of its
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methane and 0.7-1.5% for water ice
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case: the sample of infinite size.
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200
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Phase Diagram of the CH4-H20 system
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Reaction Chamber for Hydrate Produc
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Analysis: X-ray diffraction pattern
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Comparison with non-hydrate forming
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Mechanical Tests: Apparatus 220
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Morphology of Indium Jacket 222
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Schriften des Forschungszentrums J
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Schriften des Forschungszentrums J
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Druck-Materie 20b.qxd - JUWEL - Forschungszentrum Jülich

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