Double Swept Band Selective Excitation

Double Swept Band Selective Excitation

Navin Khaneja

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Abstract

The paper describes the design of band selective excitation and rotation pulses in highresolution NMR by the method of double sweep. We first show the design of a pulse sequence that produces band selective excitation to the equator of the Bloch sphere with phase linearly dispersed as frequency. We show how this linear dispersion can then be refocused by nesting free evolution between two adiabatic inversions (sweeps). We then show how this construction can be generalized to give a band selective x rotation over a desired frequency band. Experimental excitation profiles for the residual HDO signal in a sample of 99.5% D 2 O are obtained as a function of resonance offset.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Navin Khaneja. 2019. \u201cDouble Swept Band Selective Excitation\u201d. Global Journal of Research in Engineering - F: Electrical & Electronic GJRE-F Volume 19 (GJRE Volume 19 Issue F2).

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GJRE Volume 19 Issue F2

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

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Classification

GJRE-F Classification FOR Code: 290901

Submission ReceivedDecember 12, 2018
Peer Review Double Blind
Handling Editor
Accepted January 3, 2019
Published January 15, 2019

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v1.2

Issue date

June 14, 2019

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