Search found 125 matches
- Sun Mar 05, 2023 1:52 pm
- Forum: Spinach support
- Topic: Data Creation for Machine Learning
- Replies: 2
- Views: 41
Re: Data Creation for Machine Learning
Should be no problem in Spinach - use one of the existing large HSQC examples, get it to read your specifications instead of (currently) sucrose, and get it to write the results out in the format that you like.
- Sun Feb 05, 2023 4:18 pm
- Forum: Spinach support
- Topic: Simulating off-resonance R1rho
- Replies: 1
- Views: 65
Re: Simulating off-resonance R1rho
Of course there is - take, for example, the soft pulse-acquire sequence code and modify it as necessary: just add more pulses with your phases, durations, and nutation frequencies.
- Thu Dec 22, 2022 8:45 am
- Forum: Spinach support
- Topic: gradient pulse simulation
- Replies: 1
- Views: 123
Re: gradient pulse simulation
Of course it can. Use the imaging() context (see imaging examples for how to use it); it returns gradients as operators. At that point, gradient operators may be used in exactly the same way as pulse operators, including in shaped pulse functions, such as shaped_pulse_xy(), including simultaneously ...
- Wed Dec 21, 2022 6:03 am
- Forum: Spinach support
- Topic: Homospoil or coherence order selection in 'zeeman-hilb' formalism
- Replies: 4
- Views: 157
Re: Homospoil or coherence order selection in 'zeeman-hilb' formalism
Okay, I'll cook up something - it will be slow af, but it will work.
- Tue Dec 20, 2022 11:26 am
- Forum: Spinach support
- Topic: Homospoil or coherence order selection in 'zeeman-hilb' formalism
- Replies: 4
- Views: 157
Re: Homospoil or coherence order selection in 'zeeman-hilb' formalism
How's this looking? In Hilbert space, computationally efficient coherence selection is non-trivial because (unlike in spherical tensor notation) the basis is not already sorted by single-spin coherence order.
- Tue Dec 13, 2022 7:28 am
- Forum: Spinach support
- Topic: Solid Effect DNP Resonance Confusion
- Replies: 5
- Views: 218
Re: Solid Effect DNP Resonance Confusion
Alright - I think I can do the syntax matching.
Working on it...

- Mon Dec 12, 2022 7:58 pm
- Forum: Spinach support
- Topic: Solid Effect DNP Resonance Confusion
- Replies: 5
- Views: 218
Re: Solid Effect DNP Resonance Confusion
It would actually be very useful to know what syntax fees more natural - I can make alterations of course. How would you wish that parametrisation to work?
- Sun Dec 11, 2022 8:21 am
- Forum: Spinach support
- Topic: Solid Effect DNP Resonance Confusion
- Replies: 5
- Views: 218
Re: Solid Effect DNP Resonance Confusion
Okay, in the order of the original post: 1. The sys.magnet parameter does set the centre of the sweep - this is the field that goes into the background Hamiltonian in Line 70 of dnp_field_sweep.m function. The microwave offset is then added in Line 78, and the field offset inside the loop. The code ...
- Sun Nov 13, 2022 2:43 pm
- Forum: Spinach support
- Topic: Trying to simulate DARR
- Replies: 1
- Views: 210
Re: Trying to simulate DARR
Dear Rajat, of course it would slow down as you add more spins - without approximations, the complexity of Liouville space simulations of spin-1/2 systems grows very rapidly. Matrix dimensions go as 4^n, and then matrix-vector multiplication complexity scales quadratically with the dimension, so we ...
- Wed Oct 12, 2022 9:27 am
- Forum: General discussion
- Topic: Page can't be found!
- Replies: 4
- Views: 2794
Re: Page can't be found!
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