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Title: High pressure studies of potassium perchlorate

Two experiments are reported on KClO 4 at extreme conditions. A static high pressure Raman study was first conducted to 18.9 GPa. Evidence for at least two new phases was observed: one between 2.4 and 7.7 GPa (possibly sluggish), and the second near 11.7 GPa. Then, the X-ray induced decomposition rate of potassium perchlorate (KClO 4 hv→ KCl + 2O 2) was studied up to 15.2 GPa. The time-dependent growth of KCl and O 2 was monitored. The decomposition rate slowed at higher pressures. As a result, we present the first direct evidence for O 2 crystallization at higher pressures, demonstrating that O 2 molecules aggregate at high pressure.
ORCiD logo [1] ;  [2] ;  [1] ;  [1] ;  [1]
  1. Univ. of Nevada, Las Vegas, NV (United States)
  2. Univ. of Nevada, Las Vegas, NV (United States); Carnegie Inst. of Washington, Argonne, IL (United States)
Publication Date:
Grant/Contract Number:
NA0001982; FC08-01NV14049; NA0001974; FG02-99ER45775
Accepted Manuscript
Journal Name:
Chemical Physics Letters
Additional Journal Information:
Journal Volume: 660; Journal Issue: C; Journal ID: ISSN 0009-2614
Research Org:
Univ. of Nevada, Las Vegas, NV (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; useful hard x-ray photochemistry; high pressure; oxygen; kclo4 decomposition
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1359002