iPhone, iPod touch, and iPad Apps Search Engine
iPhone Apps Users Community
Advanced search | Example: action games
iPhone apps

es1

es1
  • #: 144887
  • Price: free ($0.00) In Apple Store
  • Category: Education
  • Updated: 2016-09-11
  • Current Version: 2.1
  • 2.1
  • Size: 0.70 MB
  • Language: English
  • Seller: Tom Lasinski
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 4.1 or later.
  • © Tom Lasinski
  •  Add to Favorite apps

 

Description

What happens if two electron beams move through each other in opposite directions? es1 is a numerical simulation to answer this and similar questions.

es1 is a one dimensional simulation of the interaction between two (infinitely long) charged beams moving in opposite directions. The observed behavior for e- e- is commonly known as the two-stream instability. The algorithm for es1 was created long ago (~1970) by A. Bruce Langdon and is fully documented in the book Plasma Physics by C. K. Birdsall and A. Bruce Langdon, McGraw-Hill, 1985. The implementation first on a PC and now the iPhone was done by T. Lasinski.

The opening view is a phase space plot of velocity versus position for the e- e- simulation. The two beams will gradually evolve into a rotating donut shape which is characteristic of the instability. The energy versus time plot (see diagnostics) shows the evolution of the field energy. Initially it grows exponentially; it turns over and levels out once the system becomes non-linear, just as the donut forms.

Input parameters for the two beams can be changed. Suggested parameters are provided for five simulations:

1. two stream instability. The app starts up with the parameters for e- e- interaction.

2. e+ e- instability. The behavior is quite different.

3. weak-beam ion instability. One of the beams has a mass 1000 times the other and is at rest.

What's New in Version 2.1

Test on iOS9.3.5 and removed all-style for-loop deprecations.

iPhone Screenshots

es1 iPhone Screenshot 1

Video Reviews

No video review.

Customer reviews

Write a Review

Be the first to review this app. Write a Review

Forum

Ask a question

Be the first question this app.

Users Community

+ Connect to community


The information may be outdated (2017-03-08 01:23:39). For actual information go to iTunes

Related to «es1» applications

es1 XL

es1 XL

es1_XL is a one dimensional simulation of the interaction between two (infinitely long) electron beams moving in opposite directions. The observed behavior is commonly known as the two-stream instability. es1 was created long ago (1970) by A. Bruce Langdon and is fully documented in the book Plasma… more

Price: free | Category: Education

View all related to: es1 applications



Mobile Version
iApps4you.com - is iPhone, iPod touch, and iPad apps search engine and not been authorized, sponsored or approved by Apple Inc.
Copyright © 2017 iApps4you.com.
76 ms.