MCNP Photoatomic Data Libraries - MCLIB03

    Released: 2002-07-25

    There are four photon transport libraries maintained by X-5 and distributed with MCNP: MCPLIB, MCPLIB02, MCPLIB03 and MCPLIB04.

    MCPLIB03 [1] was officially released in 2002 as another extension of the MCPLIB/MCPLIB02 data set. The cross section, form factor and fluorescence data on MCPLIB02 and MCPLIB03 are identical. MCPLIB03 includes the addition of the momentum profile (CDBD) data, derived from the work of Biggs, Mendelsohn & Mann [2].

    The MCPLIB63 and MCPLIB84 data libraries are new versions of the MCPLIB03 and MCPLIB04 data libraries where the probability of interacting with a given shell is stored using as a cumulative distribution function. MCPLIB63 and MCPLIB84 can be called using the library ID's .63c and .84c respectively. The choice of IDs is intended to keep these updates out of the general sequence of releases and indicate their special nature. It is highly recommended that users of MCNP5 download these updated libraries and replace their existing XSDIR file with a version that includes the MCPLIB63 and MCPLIB84 entries and does not include any reference to the MCPLIB03 and MCPLIB04 versions.


    1. M. C. White, "Photoatomic Data Library MCPLIB03: An Update To MCPLIB02 Containing New Compton Doppler Broadening Data," (2002), LANL internal memorandum X-5:MCW-02-110 and LA-UR-03-0787

    2. F. Biggs, L. B. Mendelsohn, and J. B. Mann, "Hartree-Fock Compton Profiles For The Elements," Atomic Data and Nuclear Data Tables, Volume 16, pp. 201-309 (1975).

    3. "Further Notes on MCPLIB03/04 and New MCPLIB63/84 Compton Broadening Data For All Versions of MCNP5," White, M.C., (2012) LA-UR-12-00018


    MCPLIB03 can be downloaded either as a zip file or as a compressed tarball

    • mcplib03.tgz (sha512 b69b2ea4d92ce11dfd291117330801495fecbae4fc5c45788b9158c14afc1a01957f6487566c92a56ca84bb108568b3babbbdc2f9048347d9d61ecf551b01bda)
    • (sha512 5457b255276040b6fe47912f418cd100212eb2f52529dce1b6a9a29a8cf2cd4165a39288bd9e0cec0abbd9e8c6e290dbadf2883fb6ac1bc5fa268f1b1ddc8be6)

    If further information is required contact a member of the Data Team by e-mail at