Xixdnp steady.m - Revision history

Kuprov: sync with Spinach main f053e432: nloops need not be a power of two, call from powder context

2026-08-30T07:47:25Z

sync with Spinach main f053e432: nloops need not be a power of two, call from powder context

Kuprov: Update function See also links and function index membership

2026-06-06T18:43:15Z

Update function See also links and function index membership

Kuprov: Rename Arguments section heading to Parameters

2026-06-05T17:53:35Z

Rename Arguments section heading to Parameters

Kuprov: Normalise sequential blank lines

2026-04-25T11:32:05Z

Normalise sequential blank lines

Kuprov: Restore pre-bulk-edit wiki content

2026-04-05T14:51:00Z

Restore pre-bulk-edit wiki content

Kuprov: Sync syntax/arguments/outputs with current Spinach source

2026-04-05T14:06:53Z

Sync syntax/arguments/outputs with current Spinach source

Kuprov: Created page with "{{DISPLAYTITLE:xixdnp_steady.m}} NOTOC TPPM DNP and its special case X-inverse-X (XiX) DNP experiment from (https://doi.org/10.1021/jacs.1c09900), steady state version. =..."

2025-05-17T13:42:14Z

Created page with "{{DISPLAYTITLE:xixdnp_steady.m}} __NOTOC__ TPPM DNP and its special case X-inverse-X (XiX) DNP experiment from (https://doi.org/10.1021/jacs.1c09900), steady state version. =..."

New page

{{DISPLAYTITLE:xixdnp_steady.m}} __NOTOC__
TPPM DNP and its special case X-inverse-X (XiX) DNP experiment from (https://doi.org/10.1021/jacs.1c09900), steady state version.

==Syntax==

dnp=xixdnp_steady(spin_system,parameters,H,R,K)

==Arguments==

H - Hamiltonian matrix, received from context function

R - relaxation superoperator, received from context function, must be thermalised to some finite temperature

K - kinetics superoperator, received from context function

parameters.irr_powers - microwave amplitude (electron nutation frequency), Hz

parameters.coil - detection state vector

parameters.pulse_dur - pulse duration, seconds

parameters.phase - phase of each second pulse in radians

parameters.nloops - number of XiX/TPPM DNP blocks, must be an integer power of 2

parameters.shot_spacing - delay between microwave irradiation periods, seconds

parameters.addshift - shift of the centre of the field profile, Hz

parameters.el_offs - microwave resonance offsets, a vector of frequencies in Hz

sys.tols.prop_chop - propagator accuracy

==Outputs==

dnp - steady state observable on the de-
tection state vector as a function
of microwave resonance offset

==See also==
[[Built-in_experiments#DNP_experiments|DNP experiments]]

''Version 2.11, authors: [[Shebha Anandhi Jegadeesan]], [[Ilya Kuprov]], [[Guinevere Mathies]]''

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:xixdnp_steady.m}} __NOTOC__
-TPPM DNP and its special case X-inverse-X (XiX) DNP experiment from (https://doi.org/10.1021/jacs.1c09900), steady state version.
+TPPM DNP and its special case X-inverse-X (XiX) DNP experiment from (https://doi.org/10.1021/jacs.1c09900), steady state version. Call from powder context.
 ==Syntax==
@@ Line 22: / Line 22: @@
      parameters.phase        - phase of each second pulse in radians
-     parameters.nloops       - number of XiX/TPPM DNP blocks, must be an integer power of 2
+     parameters.nloops       - number of XiX/TPPM DNP blocks, the calculation is faster when this is an integer power of 2
      parameters.shot_spacing - delay between microwave irradiation periods, seconds

@@ Line 39: / Line 39: @@
 ==See also==
-[[Built-in_experiments#DNP_experiments|DNP experiments]]
+[[beamdnp.m]], [[dnp_field_scan.m]], [[dnp_freq_scan.m]], [[dnp_time_dep.m]], [[masdnp.m]], [[noveldnp.m]], [[noveldnp_steady.m]], [[solid_effect.m]], [[topdnp.m]], [[xixdnp.m]], [[Built-in_experiments]]
 ''Version 2.11, authors: [[Shebha Anandhi Jegadeesan]], [[Ilya Kuprov]], [[Guinevere Mathies]]''

@@ Line 6: / Line 6: @@
      dnp=xixdnp_steady(spin_system,parameters,H,R,K)
-==Arguments==
+==Parameters==
      H   - Hamiltonian matrix, received from context function

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:xixdnp_steady.m}} __NOTOC__
 TPPM DNP and its special case X-inverse-X (XiX) DNP experiment from (https://doi.org/10.1021/jacs.1c09900), steady state version.
 ==Syntax==
-dnp=xixdnp_steady(spin_system,parameters,H,R,K)
+    dnp=xixdnp_steady(spin_system,parameters,H,R,K)
 ==Arguments==
-H - Hamiltonian matrix, received from
+    H   - Hamiltonian matrix, received from context function
-         context function
+    R   - relaxation superoperator, received from context function, must be thermalised to some finite temperature
-     R - relaxation superoperator, received
-         from context function, must be ther-
+    K   - kinetics superoperator, received from context function
-         malised to some finite temperature
+    parameters.irr_powers   - microwave amplitude (electron nutation frequency), Hz
-     K - kinetics superoperator, received
-         from context function
+    parameters.coil         - detection state vector
-−
-     parameters.irr_powers   - microwave amplitude (aka electron
+    parameters.pulse_dur    - pulse duration, seconds
-                               nutation frequency), Hz
+    parameters.phase        - phase of each second pulse in radians
-     parameters.coil         - detection state vector
+    parameters.nloops       - number of XiX/TPPM DNP blocks, must be an integer power of 2
-     parameters.pulse_dur    - pulse duration, seconds
+    parameters.shot_spacing - delay between microwave irradiation periods, seconds
-     parameters.phase        - phase of each second pulse in radians
+    parameters.addshift     - shift of the centre of the field profile, Hz
-     parameters.nloops       - number of XiX/TPPM DNP blocks, the
-                               calculation is faster when this is
+    parameters.el_offs      - microwave resonance offsets, a vector of frequencies in Hz
-                               an integer power of 2
+    sys.tols.prop_chop      - propagator accuracy
 ==Outputs==
-dnp                     - steady state observable on the de-
+    dnp                     - steady state observable on the de-
-                               tection state vector as a function
+                              tection state vector as a function
-                               of microwave resonance offset
+                              of microwave resonance offset
 ==See also==
 [[Built-in_experiments#DNP_experiments|DNP experiments]]
 ''Version 2.11, authors: [[Shebha Anandhi Jegadeesan]], [[Ilya Kuprov]], [[Guinevere Mathies]]''