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Barrier Scattering Model
written by Wolfgang Christian
The Barrier Scattering model computes the 1D quantum scattering-state wave function and shows its time evolution for an arbitrary potential V(x) on the interval [xmin,xmax]. It is a supplemental simulation for the article "Smooth double barriers in quantum mechanics" by Avik Dutt and Sayan Kar in the American Journal of Physics 78(12), 1352-1360 (2010) and has been approved by the authors and the American Journal of Physics (AJP) editor.

The transmission probability as a function of incident particle energy is shown in a second window.  Users can select a predefined V(x) or their own function and can vary the energy E and then observe the wave function and its time evolution.  The transmission amplitude is computed and a data point is added to the transmission probability graph when the energy is changed.  Because resonances are often sharp, the transmission probability graph has an energy-scan option that automatically computes the transmission coefficient as the energy is incremented.  Set the energy below the resonance and choose a small energy increment ?E to obtain a high-resolution transmission probability spectrum.

The Barrier Scattering model was created using the Easy Java Simulations (EJS) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the ejs_qm_BarrierScattering.jar file will run the program if Java is installed.

Please note that this resource requires at least version 1.5 of Java (JRE).
1 source code document is available
Subjects Levels Resource Types
Quantum Physics
- Scattering and Unbound Systems
- Upper Undergraduate
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
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Access Rights:
Free access
This material is released under a GNU General Public License Version 3 license. Additional information is available.
Rights Holder:
Wolfgang Christian
Record Cloner:
Metadata instance created July 10, 2010 by Wolfgang Christian
Record Updated:
June 2, 2014 by Wolfgang Christian
Last Update
when Cataloged:
October 9, 2008
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Record Link
AIP Format
W. Christian, Computer Program BARRIER SCATTERING MODEL (2010), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10220&DocID=1757).
W. Christian, Computer Program BARRIER SCATTERING MODEL (2010), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10220&DocID=1757>.
APA Format
Christian, W. (2010). Barrier Scattering Model [Computer software]. Retrieved July 20, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10220&DocID=1757
Chicago Format
Christian, Wolfgang. "Barrier Scattering Model." https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10220&DocID=1757 (accessed 20 July 2024).
MLA Format
Christian, Wolfgang. Barrier Scattering Model. Computer software. 2010. Java (JRE) 1.5. 20 July 2024 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10220&DocID=1757>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian", Title = {Barrier Scattering Model}, Month = {October}, Year = {2008} }
Refer Export Format

%A Wolfgang Christian %T Barrier Scattering Model %D October 9, 2008 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10220&DocID=1757 %O application/java

EndNote Export Format

%0 Computer Program %A Christian, Wolfgang %D October 9, 2008 %T Barrier Scattering Model %8 October 9, 2008 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10220&DocID=1757

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Barrier Scattering Model:

Is Based On Easy Java Simulations Modeling and Authoring Tool

The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Barrier Scattering Model.

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