Knowledge (XXG)

Dynamic structure factor

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1563: 1620: 1384: 1209: 890: 342: 589: 743: 1220: 953: 758: 212: 602:'s time-dependent pair correlation function. It can be shown (see below), that the intermediate scattering function is the correlation function of the Fourier components of the density 103: 456: 448: 389: 628: 204: 161: 132: 181: 620: 945: 913: 1661: 42:) is a mathematical function that contains information about inter-particle correlations and their time evolution. It is a generalization of the 1529: 1379:{\displaystyle G({\vec {r}},t)=\left\langle {\frac {1}{N}}\int \rho ({\vec {r}}'+{\vec {r}},t)\rho ({\vec {r}}',0)d{\vec {r}}'\right\rangle } 1604: 1204:{\displaystyle G({\vec {r}},t)=\left\langle {\frac {1}{N}}\int \sum _{i=1}^{N}\sum _{j=1}^{N}\delta \delta d{\vec {r}}'\right\rangle } 1680: 1547: 1690: 1428:
van Hove, L. (1954). "Correlations in Space and Time and Born Approximation Scattering in Systems of Interacting Particles".
885:{\displaystyle {\frac {d^{2}\sigma }{d\Omega d\omega }}=a^{2}\left({\frac {E_{f}}{E_{i}}}\right)^{1/2}S({\vec {k}},\omega )} 1654: 337:{\displaystyle S({\vec {k}},\omega )\equiv {\frac {1}{2\pi }}\int _{-\infty }^{\infty }F({\vec {k}},t)\exp(i\omega t)\,dt} 51: 1685: 1521: 749: 1695: 1647: 1570: 1538:
Lovesey, Stephen W. (1986). Theory of Neutron Scattering from Condensed Matter - Volume I: Nuclear Scattering.
31: 1539: 64: 1597: 55: 584:{\displaystyle F({\vec {k}},t)\equiv \int G({\vec {r}},t)\exp(-i{\vec {k}}\cdot {\vec {r}})\,d{\vec {r}}} 738:{\displaystyle F({\vec {k}},t)={\frac {1}{N}}\langle \rho _{\vec {k}}(t)\rho _{-{\vec {k}}}(0)\rangle } 1474: 1439: 409: 350: 186: 137: 108: 17: 1590: 1543: 1525: 1490: 916: 748:
The dynamic structure is exactly what is probed in coherent inelastic neutron scattering. The
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Vineyard, George H. (1958). "Scattering of Slow Neutrons by a Liquid".
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spectroscopy. The intermediate scattering function is the spatial
163:) is a wave vector (or wave number for isotropic materials), and 927:
The van Hove function for a spatially uniform system containing
594:
Thus we see that the dynamical structure factor is the spatial
50:
time. Experimentally, it can be accessed most directly by
1635: 1578: 1223: 956: 933: 901: 761: 631: 608: 459: 412: 353: 215: 189: 169: 140: 111: 67: 61:The dynamic structure factor is most often denoted 1513: 1378: 1203: 939: 907: 884: 737: 614: 583: 442: 383: 336: 198: 175: 155: 126: 97: 1404: 1402: 1655: 1598: 8: 1512:Ashcroft, Neil W.; Mermin, N. David (1976). 732: 672: 1662: 1648: 1605: 1591: 46:that considers correlations in both space 1356: 1355: 1327: 1326: 1299: 1298: 1280: 1279: 1259: 1231: 1230: 1222: 1181: 1180: 1158: 1147: 1146: 1127: 1126: 1101: 1090: 1089: 1074: 1073: 1055: 1054: 1041: 1030: 1020: 1009: 992: 964: 963: 955: 932: 900: 862: 861: 845: 841: 829: 819: 813: 802: 769: 762: 760: 710: 709: 705: 680: 679: 662: 639: 638: 630: 607: 570: 569: 565: 551: 550: 536: 535: 500: 499: 467: 466: 458: 420: 419: 411: 361: 360: 352: 327: 286: 285: 273: 265: 246: 223: 222: 214: 188: 183:a frequency (sometimes stated as energy, 168: 142: 141: 139: 113: 112: 110: 75: 74: 66: 1409:Hansen, J. P.; McDonald, I. R. (1986). 1398: 190: 98:{\displaystyle S({\vec {k}},\omega )} 7: 1616: 1614: 1559: 1557: 27:Function in condensed matter physics 1634:. You can help Knowledge (XXG) by 1577:. You can help Knowledge (XXG) by 783: 274: 269: 25: 1618: 1561: 1516:Solid State Physics (Appendix N) 393:intermediate scattering function 18:Intermediate scattering function 947:point particles is defined as: 598:temporal Fourier transform of 443:{\displaystyle G({\vec {r}},t)} 384:{\displaystyle F({\vec {k}},t)} 1361: 1348: 1332: 1322: 1316: 1304: 1285: 1275: 1248: 1236: 1227: 1186: 1173: 1170: 1164: 1152: 1132: 1122: 1116: 1113: 1107: 1095: 1079: 1060: 1050: 981: 969: 960: 879: 867: 858: 729: 723: 715: 698: 692: 685: 656: 644: 635: 575: 562: 556: 541: 526: 517: 505: 496: 484: 472: 463: 437: 425: 416: 378: 366: 357: 324: 312: 303: 291: 282: 240: 228: 219: 147: 118: 92: 80: 71: 1: 199:{\displaystyle \hbar \omega } 52:inelastic neutron scattering 1712: 1613: 1556: 1522:Holt, Rinehart and Winston 750:differential cross section 156:{\displaystyle {\vec {q}}} 127:{\displaystyle {\vec {k}}} 40:dynamical structure factor 1214:It can be rewritten as: 1681:Condensed matter physics 1571:condensed matter physics 1411:Theory of Simple Liquids 36:dynamic structure factor 32:condensed matter physics 1540:Oxford University Press 1487:10.1103/PhysRev.110.999 395:and can be measured by 176:{\displaystyle \omega } 1691:Condensed matter stubs 1630:–related article is a 1573:-related article is a 1452:10.1103/PhysRev.95.249 1380: 1205: 1046: 1025: 941: 909: 886: 739: 616: 585: 444: 385: 338: 200: 177: 157: 128: 99: 56:X-ray Raman scattering 1381: 1206: 1026: 1005: 942: 923:The van Hove function 910: 887: 740: 617: 615:{\displaystyle \rho } 586: 445: 386: 339: 206:). It is defined as: 201: 178: 158: 129: 100: 1221: 954: 931: 899: 759: 629: 606: 457: 410: 351: 213: 187: 167: 138: 109: 65: 1479:1958PhRv..110..999V 1444:1954PhRv...95..249V 278: 1686:Neutron scattering 1376: 1201: 937: 905: 882: 735: 612: 581: 440: 381: 334: 261: 196: 173: 153: 124: 95: 1643: 1642: 1586: 1585: 1531:978-0-03-083993-1 1364: 1335: 1307: 1288: 1267: 1239: 1189: 1155: 1135: 1098: 1082: 1063: 1000: 972: 940:{\displaystyle N} 917:scattering length 908:{\displaystyle a} 870: 835: 793: 718: 688: 670: 647: 578: 559: 544: 508: 475: 428: 405:van Hove function 401:Fourier transform 397:neutron spin echo 369: 294: 259: 231: 150: 121: 83: 16:(Redirected from 1703: 1696:Scattering stubs 1664: 1657: 1650: 1622: 1615: 1607: 1600: 1593: 1565: 1558: 1535: 1519: 1499: 1498: 1462: 1456: 1455: 1425: 1419: 1418: 1406: 1385: 1383: 1382: 1377: 1375: 1371: 1370: 1366: 1365: 1357: 1341: 1337: 1336: 1328: 1309: 1308: 1300: 1294: 1290: 1289: 1281: 1268: 1260: 1241: 1240: 1232: 1210: 1208: 1207: 1202: 1200: 1196: 1195: 1191: 1190: 1182: 1163: 1162: 1157: 1156: 1148: 1141: 1137: 1136: 1128: 1106: 1105: 1100: 1099: 1091: 1084: 1083: 1075: 1069: 1065: 1064: 1056: 1045: 1040: 1024: 1019: 1001: 993: 974: 973: 965: 946: 944: 943: 938: 914: 912: 911: 906: 891: 889: 888: 883: 872: 871: 863: 854: 853: 849: 840: 836: 834: 833: 824: 823: 814: 807: 806: 794: 792: 778: 774: 773: 763: 744: 742: 741: 736: 722: 721: 720: 719: 711: 691: 690: 689: 681: 671: 663: 649: 648: 640: 621: 619: 618: 613: 590: 588: 587: 582: 580: 579: 571: 561: 560: 552: 546: 545: 537: 510: 509: 501: 477: 476: 468: 449: 447: 446: 441: 430: 429: 421: 391:, is called the 390: 388: 387: 382: 371: 370: 362: 343: 341: 340: 335: 296: 295: 287: 277: 272: 260: 258: 247: 233: 232: 224: 205: 203: 202: 197: 182: 180: 179: 174: 162: 160: 159: 154: 152: 151: 143: 133: 131: 130: 125: 123: 122: 114: 104: 102: 101: 96: 85: 84: 76: 44:structure factor 21: 1711: 1710: 1706: 1705: 1704: 1702: 1701: 1700: 1671: 1670: 1669: 1668: 1612: 1611: 1554: 1532: 1511: 1508: 1506:Further reading 1503: 1502: 1473:(5): 999–1010. 1467:Physical Review 1464: 1463: 1459: 1431:Physical Review 1427: 1426: 1422: 1408: 1407: 1400: 1395: 1389: 1354: 1325: 1278: 1258: 1254: 1219: 1218: 1179: 1145: 1125: 1088: 1053: 991: 987: 952: 951: 929: 928: 925: 897: 896: 825: 815: 809: 808: 798: 779: 765: 764: 757: 756: 701: 675: 627: 626: 604: 603: 455: 454: 408: 407: 349: 348: 251: 211: 210: 185: 184: 165: 164: 136: 135: 107: 106: 63: 62: 28: 23: 22: 15: 12: 11: 5: 1709: 1707: 1699: 1698: 1693: 1688: 1683: 1673: 1672: 1667: 1666: 1659: 1652: 1644: 1641: 1640: 1623: 1610: 1609: 1602: 1595: 1587: 1584: 1583: 1566: 1552: 1551: 1536: 1530: 1507: 1504: 1501: 1500: 1457: 1420: 1415:Academic Press 1397: 1396: 1394: 1391: 1387: 1386: 1374: 1369: 1363: 1360: 1353: 1350: 1347: 1344: 1340: 1334: 1331: 1324: 1321: 1318: 1315: 1312: 1306: 1303: 1297: 1293: 1287: 1284: 1277: 1274: 1271: 1266: 1263: 1257: 1253: 1250: 1247: 1244: 1238: 1235: 1229: 1226: 1212: 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957: 950: 949: 948: 934: 922: 920: 918: 902: 876: 873: 864: 855: 850: 846: 842: 837: 830: 826: 820: 816: 810: 803: 799: 795: 789: 786: 780: 775: 770: 766: 755: 754: 753: 751: 726: 712: 706: 702: 695: 682: 676: 667: 664: 659: 653: 650: 641: 632: 625: 624: 623: 609: 601: 597: 572: 566: 553: 547: 538: 532: 529: 523: 520: 514: 511: 502: 493: 490: 487: 481: 478: 469: 460: 453: 452: 451: 434: 431: 422: 413: 406: 402: 398: 394: 375: 372: 363: 354: 331: 328: 321: 318: 315: 309: 306: 300: 297: 288: 279: 266: 262: 255: 252: 248: 243: 237: 234: 225: 216: 209: 208: 207: 193: 170: 144: 115: 89: 86: 77: 68: 59: 57: 53: 49: 45: 41: 37: 33: 19: 1636:expanding it 1625: 1579:expanding it 1568: 1553: 1515: 1470: 1466: 1460: 1435: 1429: 1423: 1410: 1388: 1213: 926: 894: 747: 595: 593: 404: 392: 346: 60: 47: 39: 35: 29: 752:is : 134:(sometimes 1675:Categories 1628:scattering 1438:(1): 249. 1393:References 1495:0031-899X 1362:→ 1333:→ 1320:ρ 1305:→ 1286:→ 1273:ρ 1270:∫ 1237:→ 1187:→ 1153:→ 1143:− 1133:→ 1120:δ 1096:→ 1086:− 1080:→ 1061:→ 1048:δ 1028:∑ 1007:∑ 1003:∫ 970:→ 877:ω 868:→ 790:ω 784:Ω 776:σ 733:⟩ 716:→ 707:− 703:ρ 686:→ 677:ρ 673:⟨ 645:→ 610:ρ 576:→ 557:→ 548:⋅ 542:→ 530:− 524:⁡ 506:→ 491:∫ 488:≡ 473:→ 426:→ 367:→ 319:ω 310:⁡ 292:→ 275:∞ 270:∞ 267:− 263:∫ 256:π 244:≡ 238:ω 229:→ 194:ω 191:ℏ 171:ω 148:→ 119:→ 90:ω 81:→ 1373:⟩ 1368:′ 1339:′ 1292:′ 1256:⟨ 1198:⟩ 1193:′ 1139:′ 1067:′ 989:⟨ 600:van Hove 105:, where 1475:Bibcode 1440:Bibcode 915:is the 403:of the 1546:  1528:  1493:  895:where 34:, the 1626:This 1569:This 347:Here 1632:stub 1575:stub 1544:ISBN 1526:ISBN 1491:ISSN 38:(or 1483:doi 1471:110 1448:doi 919:. 622:: 596:and 521:exp 307:exp 54:or 48:and 30:In 1677:: 1542:. 1524:. 1520:. 1489:. 1481:. 1469:. 1446:. 1436:95 1434:. 1413:. 1401:^ 450:: 58:. 1663:e 1656:t 1649:v 1638:. 1606:e 1599:t 1592:v 1581:. 1550:. 1534:. 1497:. 1485:: 1477:: 1454:. 1450:: 1442:: 1417:. 1359:r 1352:d 1349:) 1346:0 1343:, 1330:r 1323:( 1317:) 1314:t 1311:, 1302:r 1296:+ 1283:r 1276:( 1265:N 1262:1 1252:= 1249:) 1246:t 1243:, 1234:r 1228:( 1225:G 1184:r 1177:d 1174:] 1171:) 1168:0 1165:( 1160:i 1150:r 1130:r 1123:[ 1117:] 1114:) 1111:t 1108:( 1103:j 1093:r 1077:r 1071:+ 1058:r 1051:[ 1043:N 1038:1 1035:= 1032:j 1022:N 1017:1 1014:= 1011:i 998:N 995:1 985:= 982:) 979:t 976:, 967:r 961:( 958:G 935:N 903:a 880:) 874:, 865:k 859:( 856:S 851:2 847:/ 843:1 838:) 831:i 827:E 821:f 817:E 811:( 804:2 800:a 796:= 787:d 781:d 771:2 767:d 730:) 727:0 724:( 713:k 699:) 696:t 693:( 683:k 668:N 665:1 660:= 657:) 654:t 651:, 642:k 636:( 633:F 573:r 567:d 563:) 554:r 539:k 533:i 527:( 518:) 515:t 512:, 503:r 497:( 494:G 485:) 482:t 479:, 470:k 464:( 461:F 438:) 435:t 432:, 423:r 417:( 414:G 379:) 376:t 373:, 364:k 358:( 355:F 332:t 329:d 325:) 322:t 316:i 313:( 304:) 301:t 298:, 289:k 283:( 280:F 253:2 249:1 241:) 235:, 226:k 220:( 217:S 145:q 116:k 93:) 87:, 78:k 72:( 69:S 20:)

Index

Intermediate scattering function
condensed matter physics
structure factor
inelastic neutron scattering
X-ray Raman scattering
neutron spin echo
Fourier transform
van Hove
differential cross section
scattering length


Academic Press
Physical Review
Bibcode
1954PhRv...95..249V
doi
10.1103/PhysRev.95.249
Bibcode
1958PhRv..110..999V
doi
10.1103/PhysRev.110.999
ISSN
0031-899X
Solid State Physics (Appendix N)
Holt, Rinehart and Winston
ISBN
978-0-03-083993-1
Oxford University Press
ISBN

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