jems Student Edition

(version 4.12331u2023)

March 31 2023

MacOSX, Windows (64 bits), & Linux (64 bits)

Fig. CaF2 parallel projection.

(Student Edition) 4.12331u2023 is available for download free of charge. jemsSE allows calculations with only a set of predefined crystal structures (72 different structures).

Documentation available here (

Installation instructions available Windows and MacOSX. Preferences configuration here.

Mac OS-X 10.8.x or later (version 4.12331u2023).

(Mountain Lion, Mavericks, Yosemite, El Capitan, Sierra, High-Sierra, Mojave, Big Sur, Catalina, Ventura). is distributed as .dmg file (jemsSEMacOSX.dmg, version 4.12331u2023) that contains a fully configured java VM (openjdk jre 1.8.0_252). Download jemsSEMacOXS.dmg, open the dmg file and copy its content ( to the Application folder.

During the first startup of DO NOT PUSH the button "Move to Bin" of the security warning dialogue but instead push the "Cancel" button and open the System Preferences "Security & Privacy" and push the button "Open Anyway". You will have to provide an administrator login and password to modify the system settings and to allow starting the application (these messages appearances and dialogues depend on the OS version). Finally push the "Open" button.

Windows (version 4.12331u2023).

(with openjdk 1.8.0_352)

A ready to run version for 64 bits is available here (.zip).

Linux Ubuntu 20.04 (version 4.12331u2023).

(with openjdk 1.8.0_352)

A ready to run version for either Linux  (64 bits) is available here (.zip). This version rquires to update the openGL driver to version 4.x.

    Manual preview here.

    QCBED here.

    Multislice here.

    More details on jems preferences in Menu->Preferences->Help.