Chirp pulse sequences for broadband π rotation

[Display omitted] •In this paper, we present various chirp pulse sequences for implementing a broadband π rotation.•These sequences are composed of three pulse elements each of which do adiabatic passage at rate a or 2a in either backward or forward direction.•Various possible combinations are consi...

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Published in:Journal of magnetic resonance (1997) 2021-07, Vol.328, p.107002-107002, Article 107002
Main Authors: Sarkar, Sambeda, Purusottam, Rudra N., Kumar, Ashutosh, Khaneja, Navin
Format: Article
Language:English
Subjects:
Adiabatic passage
Broadband
Chirp pulse
pi rotation
Refocussing
Spin echo
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description [Display omitted] •In this paper, we present various chirp pulse sequences for implementing a broadband π rotation.•These sequences are composed of three pulse elements each of which do adiabatic passage at rate a or 2a in either backward or forward direction.•Various possible combinations are considered and different variants are presented.•We present the theory of such composite chirp sequences along with simulations and experiments. In this paper, we present various chirp pulse sequences for implementing a broadband π rotation, which can serve as an ideal refocusing pulse element in a spin echo pulse sequence. These sequences are composed of three pulse elements each of which do adiabatic passage at rate a or 2a in either backward or forward direction. Various possible combinations are considered and different variants are presented. They all implement a broadband π rotation. We present the theory of such composite chirp sequences along with simulations and experiments.
doi_str_mv 10.1016/j.jmr.2021.107002
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subjects Adiabatic passage
Broadband
Chirp pulse
pi rotation
Refocussing
Spin echo
title Chirp pulse sequences for broadband π rotation
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