Difference between revisions of "Sp acquire.m"
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{{DISPLAYTITLE:sp_acquire.m}} __NOTOC__ | {{DISPLAYTITLE:sp_acquire.m}} __NOTOC__ | ||
| − | Soft pulse followed by acquisition. The soft pulse is simulated | + | Soft pulse followed by acquisition. The soft pulse is simulated using the Fokker-Planck formalism. Syntax: |
| − | using the Fokker-Planck formalism. | ||
| − | |||
| − | + | fid=sp_acquire(spin_system,parameters,H,R,K) | |
| + | |||
| + | Parameters: | ||
| + | |||
| + | parameters.pulse_frq - frequency of the soft pulse, Hz | ||
| + | |||
| + | parameters.pulse_phi - phase of the soft pulse, rad | ||
| + | |||
| + | parameters.pulse_pwr - power of the soft pulse, Hz | ||
| + | |||
| + | parameters.pulse_dur - duration of the sof pulse, s | ||
| + | |||
| + | parameters.pulse_rnk - Fokker-Planck cut-off rank | ||
| + | |||
| + | parameters.method - method to use during the call | ||
| + | to shaped_pulse_af() | ||
| + | |||
| + | The last parameter should be increased until convergence is achieved in the output. | ||
| + | |||
| + | |||
| + | ''New in Version 1.8, authors: [[Ilya Kuprov]]'' | ||
==Arguments== | ==Arguments== | ||
| − | + | parameters.pulse_frq - frequency of the soft pulse, | |
relative to the frequency of | relative to the frequency of | ||
the current rotating frame, Hz | the current rotating frame, Hz | ||
Revision as of 15:50, 5 April 2026
Soft pulse followed by acquisition. The soft pulse is simulated using the Fokker-Planck formalism. Syntax:
fid=sp_acquire(spin_system,parameters,H,R,K)
Parameters:
parameters.pulse_frq - frequency of the soft pulse, Hz
parameters.pulse_phi - phase of the soft pulse, rad
parameters.pulse_pwr - power of the soft pulse, Hz
parameters.pulse_dur - duration of the sof pulse, s
parameters.pulse_rnk - Fokker-Planck cut-off rank
parameters.method - method to use during the call
to shaped_pulse_af()
The last parameter should be increased until convergence is achieved in the output.
New in Version 1.8, authors: Ilya Kuprov
Arguments
parameters.pulse_frq - frequency of the soft pulse,
relative to the frequency of
the current rotating frame, Hz
parameters.pulse_phi - phase of the soft pulse, rad
parameters.pulse_pwr - power of the soft pulse, rad/s
parameters.pulse_dur - duration of the sof pulse, s
parameters.pulse_rnk - Fokker-Planck cut-off rank,
a small integer: start with 2
and increase until the answer
stops changing
parameters.offset - transmitter / receiver offset
for the time domain pulses and
detection, relative to the cur-
rent rotating frame, Hz
parameters.sweep - sweep width for time domain
detection, Hz
parameters.npoints - number of points in the free
induction decay
parameters.rho0 - initial state
parameters.coil - detection state
parameters.method - soft puse propagation method,
'expv' for Krylov propagation,
'expm' for exponential propa-
gation, 'evolution' for Spin-
ach evolution function
ilya.kuprov@weizmann.ac.il
