Small-Angle Neutron Scattering - Kfki

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Structural polydispersity V c = const =< ρ > I ρ e 2 2 2 2 ~ 2 2 2 2 ( 0) = n∆ ~ ρ Vc + n < ( ρ − ρe ) > Vc = n∆ρ Vc + nσ ρVc ~ 2 2 A B Rg = ( Rc + ~ − ~ ) /(1 + 2 ∆ρ ( ∆ρ) D ( ∆ ~ ρ) 2 ) A =< α > B =< β > − < 2 2 2 2 ( ρ − ρe ) α > − < ( ρ − ρe ) > Rc =< β > − < ( ρ − ρe ) α > −σ ρ Rc Mitglied in der Helmholtz-Gemeinschaft D =< ρ ρe >= σ 2 2 ( − ) ρ
Example: ferritin protein shell, R 1 = 6 nm, ρ 1 = 1.9-2.95 × 10 10 cm -2 ρ s Mitglied in der Helmholtz-Gemeinschaft ferrite core, R 0 = 4 nm SANS curves from iron unsaturated ferritin in various H 2 O/D 2 O mixtures H.Stuhrmann, E.Duee, JAC 8 (1975) 538
Page 1 and 2: Small-Angle Neutron Scattering Mitg
Page 3 and 4: Small-angle neutron scattering (SAN
Page 5 and 6: Small-Angle Neutron Scattering (SAN
Page 7 and 8: Contrast variation: basic idea “C
Page 9 and 10: Example: core-shell particles ρ 1
Page 11 and 12: Guinier approximation Guinier appro
Page 13 and 14: Radius of gyration: monodisperse sy
Page 15 and 16: Contrast variation on ribosome 30S
Page 17 and 18: Polydisperse non-magnetic systems I
Page 19 and 20: Polydisperse systems. General case
Page 21 and 22: Modified shape basic function ρ s
Page 23 and 24: Polydisperse systems Intensity at z
Page 25: Case of two kinds of particles ρ ,
Page 29 and 30: For particle of two components with
Page 31 and 32: Effect of magnetic scattering Monod
Page 33 and 34: Effect of magnetic scattering Polyd
Page 35 and 36: Integral scattering parameters 2 2
Page 37 and 38: Magnetic fluids (ferrofluids) Mitgl
Page 39 and 40: Magnetic drug concentrator: idea (S
Page 41 and 42: Magnetic fluids (ferrofluids): spec
Page 43 and 44: Types of ferrofluid stabilization S
Page 45 and 46: Nuclear and magnetic particle form-
Page 47 and 48: Contrast variation on FFs: separate
Page 49 and 50: Contrast variation on FFs: separate
Page 51 and 52: Dependence of match point on q Matc
Page 53 and 54: Mitglied in der Helmholtz-Gemeinsch
Page 55 and 56: Small-angle neutron scattering Pola
Page 57 and 58: Separation of nuclear and magnetic
Page 59 and 60: Mitglied in der Helmholtz-Gemeinsch
Page 61 and 62: Summary • Small-angle neutron sca
Page 63: Thank you for attention! Mitglied i

Small-Angle Neutron Scattering - Kfki

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